Chaco War

War between Bolivia and Paraguay (1932 to 1935)

The Chaco War was fought from 1932 to 1935 between Bolivia and Paraguay, over the control of the northern part of the Gran Chaco region of South America, which was thought to be rich in oil. The war is also referred to as La Guerra de la Sed in literary circles since it was fought in the semi-arid Chaco. The bloodiest interstate military conflict fought in South America in the 20th century, it was fought between two of its poorest countries, both of which had lost territory to neighbours in 19th-century wars.

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