Zanja de Alsina
Encyclopedia
Adolfo Alsina
Adolfo Alsina Maza was an Argentine lawyer and Unitarian politician, and one of the founders of the Partido Autonomista and the National Autonomist Party.-Biography:...
's trench) were a system of trench
Trench
A trench is a type of excavation or depression in the ground. Trenches are generally defined by being deeper than they are wide , and by being narrow compared to their length ....
es and wooden watchtowers (mangrullos) built in the centre and south of the Buenos Aires Province
Buenos Aires Province
The Province of Buenos Aires is the largest and most populous province of Argentina. It takes the name from the city of Buenos Aires, which used to be the provincial capital until it was federalized in 1880...
to defend the territories of the federal government against Mapuches
Mapuche
The Mapuche are a group of indigenous inhabitants of south-central Chile and southwestern Argentina. They constitute a wide-ranging ethnicity composed of various groups who shared a common social, religious and economic structure, as well as a common linguistic heritage. Their influence extended...
malon
Malón
Malón or maloca was a military raiding tactic of the Mapuche peoples from the 17th to the 19th centuries.The "maloca" among the Mapuche is described as a means of obtaining justice, by Juan Ignacio Molina:...
es. The three-meter wide trench was reinforced with 80 small strongholds and garrisons, called fortines. The defensive line was named after Adolfo Alsina
Adolfo Alsina
Adolfo Alsina Maza was an Argentine lawyer and Unitarian politician, and one of the founders of the Partido Autonomista and the National Autonomist Party.-Biography:...
, Argentine Minister of War under President
President of Argentina
The President of the Argentine Nation , usually known as the President of Argentina, is the head of state of Argentina. Under the national Constitution, the President is also the chief executive of the federal government and Commander-in-Chief of the armed forces.Through Argentine history, the...
Nicolás Avellaneda
Nicolás Avellaneda
Nicolás Remigio Aurelio Avellaneda Silva was an Argentine politician and journalist, and president of Argentina from 1874 to 1880. Avellaneda's main projects while in office were banking and education reform, leading to Argentina's economic growth...
who planned the building of the trench in the 1870s. The trench bore criticism when it became clear that was unable to stop large-scale incursions between 1876 and 1877.