Mongol invasions of Japan
Encyclopedia
The of 1274 and 1281 were major military
Military
A military is an organization authorized by its greater society to use lethal force, usually including use of weapons, in defending its country by combating actual or perceived threats. The military may have additional functions of use to its greater society, such as advancing a political agenda e.g...

 efforts undertaken by Kublai Khan
Kublai Khan
Kublai Khan , born Kublai and also known by the temple name Shizu , was the fifth Great Khan of the Mongol Empire from 1260 to 1294 and the founder of the Yuan Dynasty in China...

 to conquer the Japanese islands
Japanese Archipelago
The , which forms the country of Japan, extends roughly from northeast to southwest along the northeastern coast of the Eurasia mainland, washing upon the northwestern shores of the Pacific Ocean...

 after the submission of Goryeo
Goryeo
The Goryeo Dynasty or Koryŏ was a Korean dynasty established in 918 by Emperor Taejo. Korea gets its name from this kingdom which came to be pronounced Korea. It united the Later Three Kingdoms in 936 and ruled most of the Korean peninsula until it was removed by the Joseon dynasty in 1392...

 (Korea
Korea
Korea ) is an East Asian geographic region that is currently divided into two separate sovereign states — North Korea and South Korea. Located on the Korean Peninsula, Korea is bordered by the People's Republic of China to the northwest, Russia to the northeast, and is separated from Japan to the...

) to vassaldom. Despite their ultimate failure, the invasion attempts are of macrohistorical
Macro-historical
Macro-historical analysis seeks out large, long-term trends in world history, searching for ultimate patterns through a comparison of proximate details. For example, a macro-historical study might examine Japanese feudalism and European feudalism in order to decide whether feudal structures are an...

 importance, because they set a limit on Mongol expansion, and rank as nation-defining events in Japanese history
History of Japan
The history of Japan encompasses the history of the islands of Japan and the Japanese people, spanning the ancient history of the region to the modern history of Japan as a nation state. Following the last ice age, around 12,000 BC, the rich ecosystem of the Japanese Archipelago fostered human...

. The Japanese were successful, in part because the Mongols lost up to 75% of their troops and supplies both times on the ocean as a result of major storms. The invasions are referred to in many works of fiction, and are the earliest events for which the word kamikaze
Kamikaze (typhoon)
The Kamikaze , were two winds or storms that are said to have saved Japan from two Mongol fleets under Kublai Khan. These fleets attacked Japan in 1274 and again in 1281...

, or "divine wind", is widely used. With the exception of the occupation of Japan at the end of World War II
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

, these failed invasion attempts are the closest Japan has come to being conquered by foreign power in the last 1500 years.

Background

After a series of Mongol invasions
Mongol invasions of Korea
The Mongol invasions of Korea consisted of a series of campaigns by the Mongol Empire against Korea, then known as Goryeo, from 1231 to 1270...

 from 1231 to 1259, the Goryeo Dynasty
Goryeo
The Goryeo Dynasty or Koryŏ was a Korean dynasty established in 918 by Emperor Taejo. Korea gets its name from this kingdom which came to be pronounced Korea. It united the Later Three Kingdoms in 936 and ruled most of the Korean peninsula until it was removed by the Joseon dynasty in 1392...

 of Korea signed a treaty in favor of the Mongols
Mongols
Mongols ) are a Central-East Asian ethnic group that lives mainly in the countries of Mongolia, China, and Russia. In China, ethnic Mongols can be found mainly in the central north region of China such as Inner Mongolia...

 and became a Mongolian vassal
Vassal state
A vassal state is any state that is subordinate to another. The vassal in these cases is the ruler, rather than the state itself. Being a vassal most commonly implies providing military assistance to the dominant state when requested to do so; it sometimes implies paying tribute, but a state which...

. Kublai was declared Great Khan of the Mongol Empire
Mongol Empire
The Mongol Empire , initially named as Greater Mongol State was a great empire during the 13th and 14th centuries...

 in 1260 (though not widely recognized by the Mongols in the west) and established his capital at Dadu
Khanbaliq
Khanbaliq or Dadu refers to a city which is now Beijing, the current capital of the People's Republic of China...

 (Beijing
Beijing
Beijing , also known as Peking , is the capital of the People's Republic of China and one of the most populous cities in the world, with a population of 19,612,368 as of 2010. The city is the country's political, cultural, and educational center, and home to the headquarters for most of China's...

) in 1264. Japan at the time was ruled by the Shikken
Shikken
The was the regent for the shogun in the Kamakura shogunate in Japan. The post was monopolized by the Hōjō clan, and this system only existed once in Japanese history, between 1203 and 1333...

 (Shogunate Regents) of the Hōjō clan
Hojo clan
See the late Hōjō clan for the Hōjō clan of the Sengoku Period.The in the history of Japan was a family who controlled the hereditary title of shikken of the Kamakura Shogunate. In practice, the family had actual governmental power, many times dictatorial, rather than Kamakura shoguns, or the...

, who had intermarried with and wrested control from the Shogun
Shogun
A was one of the hereditary military dictators of Japan from 1192 to 1867. In this period, the shoguns, or their shikken regents , were the de facto rulers of Japan though they were nominally appointed by the emperor...

 of the Kamakura Shogunate
Kamakura shogunate
The Kamakura shogunate was a military dictatorship in Japan headed by the shoguns from 1185 to 1333. It was based in Kamakura. The Kamakura period draws its name from the capital of the shogunate...

 after his death in 1203. The inner circle of the Hōjō had become so preeminent that they no longer consulted even the Hyōjō (評定) (the council of the shogunate of the Shogun
Shogun
A was one of the hereditary military dictators of Japan from 1192 to 1867. In this period, the shoguns, or their shikken regents , were the de facto rulers of Japan though they were nominally appointed by the emperor...

), nor the Imperial Court of Kyoto
Kyoto
is a city in the central part of the island of Honshū, Japan. It has a population close to 1.5 million. Formerly the imperial capital of Japan, it is now the capital of Kyoto Prefecture, as well as a major part of the Osaka-Kobe-Kyoto metropolitan area.-History:...

, nor their vassals (gokenin
Gokenin
A was initially a vassal of the shogunate of the Kamakura and the Muromachi periods. In exchange for protection and the right to become shugo or jitō , in times of peace a gokenin had the duty to protect the imperial court and Kamakura, in case of war had to fight with his forces under the...

), and made their decisions in their private meetings at their residences (寄合 yoriai).

The Mongols had also made attempts to subjugate the native peoples of Sakhalin since 1260, which only ended in 1308.

Contact

In 1266, Kublai Khan dispatched emissaries to Japan, with a letter saying:
Kublai essentially demanded that Japan become a vassal
Vassal
A vassal or feudatory is a person who has entered into a mutual obligation to a lord or monarch in the context of the feudal system in medieval Europe. The obligations often included military support and mutual protection, in exchange for certain privileges, usually including the grant of land held...

 and send tribute under a threat of conflict. However, the emissaries returned empty-handed.

A second set of emissaries were sent in 1268, returning empty-handed like the first. Both sets of emissaries met with the Chinzei Bugyō
Chinzei Bugyo
', or Defense Commissioner of the West, was the name given to a post created in 1186 to oversee the defense of Kyūshū. At the time, the primary mission of the Bugyō was to seek out and eliminate anyone who had supported Minamoto no Yoshitsune over his brother Yoritomo to become Shogun...

, or Defense Commissioner for the West, who passed on the message to Shikken
Shikken
The was the regent for the shogun in the Kamakura shogunate in Japan. The post was monopolized by the Hōjō clan, and this system only existed once in Japanese history, between 1203 and 1333...

 Hōjō Tokimune
Hojo Tokimune
of the Hōjō clan was the eighth shikken of the Kamakura shogunate , known for leading the Japanese forces against the invasion of the Mongols and for spreading Zen Buddhism and by extension Bushido among the warrior class.- Life :Born as the eldest son of the regent and Tokuso Tokiyori of the...

, Japan's ruler in Kamakura
Kamakura, Kanagawa
is a city located in Kanagawa Prefecture, Japan, about south-south-west of Tokyo. It used to be also called .Although Kamakura proper is today rather small, it is often described in history books as a former de facto capital of Japan as the seat of the Shogunate and of the Regency during the...

, but also to the Emperor
Emperor of Japan
The Emperor of Japan is, according to the 1947 Constitution of Japan, "the symbol of the state and of the unity of the people." He is a ceremonial figurehead under a form of constitutional monarchy and is head of the Japanese Imperial Family with functions as head of state. He is also the highest...

 in Kyoto
Kyoto
is a city in the central part of the island of Honshū, Japan. It has a population close to 1.5 million. Formerly the imperial capital of Japan, it is now the capital of Kyoto Prefecture, as well as a major part of the Osaka-Kobe-Kyoto metropolitan area.-History:...

.

After discussing the letters with his inner circle, there was much debate as to what to do, but Tokimune had his mind made up; he had the emissaries sent back with no answer. They re-sent emissaries time and time again, some through Korean emissaries, and some by Mongol
Mongols
Mongols ) are a Central-East Asian ethnic group that lives mainly in the countries of Mongolia, China, and Russia. In China, ethnic Mongols can be found mainly in the central north region of China such as Inner Mongolia...

 ambassadors on March 7, 1269; September 17, 1269; September, 1271; and May, 1272 - each time not even being permitted to land in Kyushu. The Imperial Court suggested surrender out of overwhelming fear, but really had no say in the matter since its marginalization after losing the Jōkyū War
Jokyu War
', also known as the Jōkyū Disturbance or the Jōkyū Rebellion, was fought in Japan between the forces of Retired Emperor Go-Toba and those of the Hōjō clan, regents of the Kamakura shogunate, whom the retired emperor was trying to overthrow....

.

The Kamakura shogunate (Bakufu)
Kamakura shogunate
The Kamakura shogunate was a military dictatorship in Japan headed by the shoguns from 1185 to 1333. It was based in Kamakura. The Kamakura period draws its name from the capital of the shogunate...

 under Tokimune ordered all those who held fiefs in Kyūshū
Kyushu
is the third largest island of Japan and most southwesterly of its four main islands. Its alternate ancient names include , , and . The historical regional name is referred to Kyushu and its surrounding islands....

 (the area closest to Korea, and thus most likely to be attacked) to return to their lands, and forces in Kyūshū moved west, further securing the most likely landing points. After acknowledging its impotence, the Imperial Court led great prayer services, and much government business was put off to deal with this crisis.

First invasion

The Khan was willing to go to war as early as 1268 after having been rebuffed twice, but found that his empire did not have the resources to provide him with a sufficient navy at that time. With the Mongol entry into the Korean court by marriage of the Korean crown prince to Kublai Khan's daughter, a mass construction of ships began in Korea's south-eastern shores, while the Mongols continued to demand surrender.

Kublai Khan founded the Yuan Dynasty
Yuan Dynasty
The Yuan Dynasty , or Great Yuan Empire was a ruling dynasty founded by the Mongol leader Kublai Khan, who ruled most of present-day China, all of modern Mongolia and its surrounding areas, lasting officially from 1271 to 1368. It is considered both as a division of the Mongol Empire and as an...

 in 1271. In 1272, King Chungnyeol
Chungnyeol of Goryeo
Chungnyeol of Goryeo was the 25th ruler of the medieval Korean kingdom of Goryeo. He was the son of Wonjong, his predecessor on the throne....

 offered counsel to Kublai Khan. According to Goryeosa
Goryeosa
The Goryeosa or History of Goryeo is the principal surviving history of Korea's Goryeo Dynasty. It was composed nearly a century after the fall of Goryeo, during the reign of King Sejong...

,
Japan is yet to know the world is hallowed. So dispatch emissaries and convey our military power to Japan. Battle ships and military rations are well prepared. If you appoint me, I encourage you to the extent of my power. According to the History of Yuan
History of Yuan
The History of Yuan is one of the official Chinese historical works known as the Twenty-Four Histories of China. The historical work consists of 210 chapters chronicling the history of the Genghisid Yuan Dynasty from the time of Genghis Khan to the flight of the last Yuan Emperor Huizong from...

, King of Goryeo ask Kublai Khan for conquering Japan. I am building 150 ships and encourage your conquest of Japan.

Finally, in 1274, the Yuan fleet set out, with an estimated 15,000 Mongol and Chinese soldiers and 8,000 Korean soldiers, in 300 large vessels and 400-500 smaller craft, although figures vary considerably depending on the source. They ravaged the islands of Tsushima
Tsushima Island
Tsushima Island is an island of the Japanese Archipelago situated in the middle of the Tsushima Strait at 34°25'N and 129°20'E. The main island of Tsushima was once a single island, but the island was divided into two in 1671 by the Ōfunakosiseto canal and into three in 1900 by the Manzekiseto canal...

 and Iki
Iki Island
Iki Island is an island lying between the island of Kyūshū and the Tsushima islands in the Tsushima Strait, the eastern channel of the Korea Strait. It is currently part of Nagasaki Prefecture of Japan. The city of Iki is the centre of the local government. The island has three ports.The island’s...

, including piercing the hands of women and hanging them on their boats. They landed on November 19 in Hakata Bay
Hakata Bay
Hakata Bay is a bay in the northwestern part of Fukuoka city, on the Japanese island of Kyūshū. It faces the Tsushima Strait, and features beaches and a port, though parts of the bay have been reclaimed in the expansion of the city of Fukuoka...

, a short distance from Dazaifu, the ancient administrative capital of Kyūshū
Kyushu
is the third largest island of Japan and most southwesterly of its four main islands. Its alternate ancient names include , , and . The historical regional name is referred to Kyushu and its surrounding islands....

. The following day brought the Battle of Bun'ei
Battle of Bun'ei
The , also known as the First Battle of Hakata Bay was the first attempt by the Yuan Dynasty founded by the Mongols to invade Japan. After conquering the Tsushima Island and Iki, Kublai Khan's fleet moved on to Japan proper, landing at Hakata Bay, a short distance from Kyūshū's administrative...

 (文永の役), also known as the "First Battle of Hakata Bay".

The Japanese were inexperienced in managing such a large force (all of North Kyūshū had been mobilized), and the Mongols made significant initial progress. It had been approximately 50 years since the last major combat event in Japan (Go-Toba's adherents in 1221), leaving not a single Japanese general with adequate experience in moving large bodies of troops. In addition, the style of warfare that was customary within feudal Japan involved man-to-man duels
Single combat
Single combat is a fight between two single warriors which takes place in the context of a battle between two armies, with the two often considered the champions of their respective sides...

 of sorts, even on large battlefields. The Mongols possessed foreign weapons which included superior long-range armaments (short bows with poisoned arrows to compensate inferior power and grenades with ceramic shell thrown by slings to terrify enemy's horses), and easily had the upper hand in land combat. The Japanese force at Hakata Bay needed time to await the arrival of reinforcements, with which they would be able to overwhelm the Mongol invaders. Around nightfall, a severe storm caused the Mongol ship captains to suggest that the land force re-embark on the sailing vessels in order to avoid the risk of being marooned on Japanese soil. By daybreak, only a few ships had not set out to sea. Those that had were destroyed by the storm. Some accounts offer casualty reports that suggest 200 Mongol ships were lost. However, Japanese small boats were much swifter and more maneuverable than Mongol ships, and the Japanese were able to board the remaining Mongol ships.

Meanwhile, back in Kamakura, Tokimune was overcome with fear when the invasion finally came, and wanted to defeat cowardice, so he asked Bukko (his Zen master) for advice. Bukko replied he had to sit in meditation to find the source of his cowardice in himself. Tokimune went to Bukko and said: "Finally there is the greatest happening of my life." Bukko asked, "How do you plan to face it?" Tokimune screamed "Katsu!" ("Victory!") as if he wanted to scare all the enemies in front of him. Bukko responded with satisfaction: "It is true that the son of a lion
Lion
The lion is one of the four big cats in the genus Panthera, and a member of the family Felidae. With some males exceeding 250 kg in weight, it is the second-largest living cat after the tiger...

 roars as a lion!" Since that time, Tokimune became instrumental in the spreading of Zen Buddhism and Bushido
Bushido
, meaning "Way of the Warrior-Knight", is a Japanese word which is used to describe a uniquely Japanese code of conduct and a way of the samurai life, loosely analogous to the concept of chivalry. It originates from the samurai moral code and stresses frugality, loyalty, martial arts mastery, and...

 in Japan among the samurai.

After the invasion, allied fleets returned to their homeland. The Goryeo general Kim Bang-gyeong paid tribute to the king and Mongol queen of Goryeo with 200 boys and girls for slaves.

Developments leading to the second invasion

Starting in 1275, the Kamakura shogunate
Kamakura shogunate
The Kamakura shogunate was a military dictatorship in Japan headed by the shoguns from 1185 to 1333. It was based in Kamakura. The Kamakura period draws its name from the capital of the shogunate...

 (Bakufu) made increased efforts to defend against the second invasion, which they thought was sure to come. In addition to better organizing the samurai of Kyūshū, they ordered the construction of forts and a large stone wall (石塁, Sekirui), and other defensive structures at many potential landing points, including Hakata Bay, where a two meter high wall was constructed in 1276. Religious services increased and the Hakōzaki shrine
Hakozaki Shrine
is a Shintō shrine in Fukuoka .-History:Hakozaki Shrine was founded in 923, with the transfer of the spirit of the kami Hachiman from Daibu Hachiman Shrine in what is Honami Commandry, Chikuzen Province in Kyūshū....

, having been destroyed by the Yuan forces, was rebuilt. A coastal watch was instituted and rewards were given to some 120 valiant samurai. There was even a plan for a raid on Korea
Korea
Korea ) is an East Asian geographic region that is currently divided into two separate sovereign states — North Korea and South Korea. Located on the Korean Peninsula, Korea is bordered by the People's Republic of China to the northwest, Russia to the northeast, and is separated from Japan to the...

 to be carried out by Shōni Tsunesuke, a general from Kyūshū, though this was never executed.

After the failed invasion, Kublai Khan was tired of being ignored and not being allowed to land, so five Yuan emissaries were dispatched in September 1275 and sent to Kyūshū
Kyushu
is the third largest island of Japan and most southwesterly of its four main islands. Its alternate ancient names include , , and . The historical regional name is referred to Kyushu and its surrounding islands....

, refusing to leave without a reply. Tokimune responded by having them sent to Kamakura
Kamakura, Kanagawa
is a city located in Kanagawa Prefecture, Japan, about south-south-west of Tokyo. It used to be also called .Although Kamakura proper is today rather small, it is often described in history books as a former de facto capital of Japan as the seat of the Shogunate and of the Regency during the...

 and then beheading them. The graves of those 5 executed Yuan emissaries exist to this day in Kamakura
Kamakura, Kanagawa
is a city located in Kanagawa Prefecture, Japan, about south-south-west of Tokyo. It used to be also called .Although Kamakura proper is today rather small, it is often described in history books as a former de facto capital of Japan as the seat of the Shogunate and of the Regency during the...

 at Tatsunokuchi.http://www.kamakura-burabura.com/meisyoenosimajyourituji.htm Then again on July 29, 1279, 5 more Yuan emissaries were sent in the same manner, and again beheaded, this time in Hakata
Hakata
Hakata may refer to:*Hakata-ku, Fukuoka, a ward in Fukuoka Prefecture, Japan.**Hakata ningyō , traditional Japanese clay dolls, originally from Hakata*Hakata Station, a large train station in Fukuoka...

. Expecting another invasion, on Feb 21, 1280, the Imperial Court ordered all temples and shrines to pray for victory over the Yuan.

Second invasion

In the spring of 1281, the Mongols sent two separate forces. An impressive force of 900 ships containing 40,000 Korean, Chinese, and Mongol troops set out from Masan, while an even larger force of 100,000 sailed from southern China in 3,500 ships. The Mongols' plan called for an overwhelming coordinated attack from the combined imperial Yuan fleets. The Chinese fleet of the Yuan was delayed by difficulties in provisioning and manning the large number of ships they had. Their Korean fleet set sail, suffered heavy losses at Tsushima, and turned back. In the summer, the combined Korean/Chinese fleet took Iki-shima, and moved on to Kyūshū, landing at a number of separate positions. In a number of individual skirmishes, known collectively as the Battle of Kōan
Battle of Koan
The ', also known as the Second Battle of Hakata Bay, was the second attempt by the Yuan Dynasty founded by the Mongols to invade Japan...

 (弘安の役), or the "Second Battle of Hakata Bay", the Mongol forces were driven back to their ships. The Japanese army was heavily outnumbered, but had fortified the coastal line, and was easily able to repulse the auxiliaries that were launched against it. Beginning August 15, the now-famous kamikaze
Kamikaze (typhoon)
The Kamikaze , were two winds or storms that are said to have saved Japan from two Mongol fleets under Kublai Khan. These fleets attacked Japan in 1274 and again in 1281...

, a massive typhoon, assaulted the shores of Kyūshū for two days straight, and destroyed much of the Mongol fleet.

Furthermore, it is now believed that the destruction of the Mongol fleet was greatly facilitated by an additional factor. Most of the invasion force was composed of hastily-acquired flat-bottomed Chinese riverboats and ships built in Goryeo of a similar type. According to Goryeosa, Southern Song type ships were too costly and their construction was too slow, so the traditional types were constructed. Such ships (unlike ocean-going ships, which have a curved keel to prevent capsizing) were difficult to use on high seas, let alone during a massive typhoon.

Significance

From a military perspective, the failed invasions of Kublai Khan
Kublai Khan
Kublai Khan , born Kublai and also known by the temple name Shizu , was the fifth Great Khan of the Mongol Empire from 1260 to 1294 and the founder of the Yuan Dynasty in China...

 were the first of only two instances (the other being the Japanese invasion of Korea in 1592) where the samurai would fight foreign troops rather than amongst themselves. It is also the first time samurai clans fought for the sake of Japan itself instead of more narrowly defined clan interests. The invasions also exposed the Japanese to an alien fighting style which, devoid of the single combat
Single combat
Single combat is a fight between two single warriors which takes place in the context of a battle between two armies, with the two often considered the champions of their respective sides...

 that characterized traditional samurai combat, they saw as inferior. This difference is noted in the Hachiman Gudōkun:
The Mongol method of advances and withdrawals accompanied by bells, drums and war cries was also unknown in Japan, as was the technique of Mongolian archers, which involved shooting arrows en masse into the air rather than long-ranged one-on-one combat. Besides national boundaries, the Zen Buddhism of Hojo Tokimune and his Zen master Bukko had gained credibility, and the first mass followings of Zen teachings among samurai began to flourish. This also marks the first use of the word kamikaze ("Divine Wind"). It also perpetuated the Japanese belief that they could not be defeated, which remained an important aspect of Japanese foreign policy until the end of the Second World War
World War II
World War II, or the Second World War , was a global conflict lasting from 1939 to 1945, involving most of the world's nations—including all of the great powers—eventually forming two opposing military alliances: the Allies and the Axis...

. The invasions were also the only time that enemy nations would mount an invasion of any of the main four islands of Japan. The failed invasions also demonstrated a weakness of the Mongols - the inability to mount naval invasions successfully. (See also Mongol invasions of Vietnam
Mongol invasions of Vietnam
Mongol invasions of Vietnam or Mongol-Vietnamese War refer to the three times that the Mongol Empire and its chief khanate the Yuan Dynasty invaded Đại Việt during the Trần Dynasty and the Kingdom of Champa: in 1257–1258, 1284–1285, and 1287–1288. The Mongols were defeated by Đại...

). After the death of Kublai, his successor, Temür Öljeytü unsuccessfully demanded the submission of Japan in 1295.

The Mongols and the Ashikaga shogunate of Japan made their peace in the late 14th century during the reign of Toghun Temür, the last Yuan emperor in Dadu
Khanbaliq
Khanbaliq or Dadu refers to a city which is now Beijing, the current capital of the People's Republic of China...

. Long before the peace, there was stable trade in East Asia
East Asia
East Asia or Eastern Asia is a subregion of Asia that can be defined in either geographical or cultural terms...

 under the dominance of the Mongols and Japan.

As a consequence of the destruction of the Mongol fleets, Japan's independence was guaranteed. Simultaneously, a power struggle within Japan led to dominance of military governments and diminishing Imperial power.

Further reading

  • Conlan, Thomas. (2001). In Little Need of Divine Intervention, Cornell University Press, 2001 — includes a black-and-white reproduction of the Moko Shurai Ekotoba
    Mōko Shūrai Ekotoba
    is a set of two Japanese illustrated handscrolls composed between 1275 and 1293. They were commissioned by the samurai Takezaki Suenaga in order to record his battlefield valor and deeds during the Mongol Invasions of Japan....

    , as well as translations of relevant Kamakura-era documents and an essay by Prof. Conlan concerning the Invasions (in which he argues that the Japanese were better placed to withstand the Mongols than traditionally given credit for). The essay is available in pdf form at this link.

External links

The source of this article is wikipedia, the free encyclopedia.  The text of this article is licensed under the GFDL.
 
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