Czechoslovakia or Czecho-Slovakia (Czech and Slovak: Československo, Česko-Slovensko) was a sovereign state
Sovereign state
A sovereign state, or simply, state, is a state with a defined territory on which it exercises internal and external sovereignty, a permanent population, a government, and the capacity to enter into relations with other sovereign states. It is also normally understood to be a state which is neither...

 in Central Europe
Central Europe
Central Europe or alternatively Middle Europe is a region of the European continent lying between the variously defined areas of Eastern and Western Europe...

 which existed from October 1918, when it declared its independence from the Austro-Hungarian Empire, until 1992. From 1939 to 1945, the state did not de facto
De facto
De facto is a Latin expression that means "concerning fact." In law, it often means "in practice but not necessarily ordained by law" or "in practice or actuality, but not officially established." It is commonly used in contrast to de jure when referring to matters of law, governance, or...

 exist because of its forced division and partial incorporation into Nazi Germany
Nazi Germany
Nazi Germany , also known as the Third Reich , but officially called German Reich from 1933 to 1943 and Greater German Reich from 26 June 1943 onward, is the name commonly used to refer to the state of Germany from 1933 to 1945, when it was a totalitarian dictatorship ruled by...

, but the Czechoslovak government-in-exile
Czechoslovak government-in-exile
The Czechoslovak government-in-exile was an informal title conferred upon the Czechoslovak National Liberation Committee, initially by British diplomatic recognition. The name came to be used by other World War II Allies as they subsequently recognized it...

 nevertheless continued to exist during this period.

1918    World War I: Czechoslovakia is granted independence from Austria-Hungary marking the beginning of independent Czechoslovak state, after 300 years.

1918    Czechoslovakia becomes a republic.

1919    Austria and the Allies sign the Treaty of Saint-Germain recognizing the independence of Poland, Hungary, Czechoslovakia and Yugoslavia.

1938    Adolf Hitler demands autonomy and self-determination for the Germans of the Sudetenland region of Czechoslovakia.

1938    Mobilization of the Czechoslovak army in response to the Munich Crisis.

1938    At 2:00 am, Britain, France, Germany and Italy sign the Munich Agreement, allowing Germany to occupy the Sudetenland region of Czechoslovakia.

1939    World War II: German troops occupy the remaining part of Bohemia and Moravia; Czechoslovakia ceases to exist.

1942    World War II: in retaliation for the assassination of Reinhard Heydrich, Nazis in Czechoslovakia kill over 1,800 people.

1944    Soviet Union invades Czechoslovakia.

1948    Communist revolution in Czechoslovakia.