Chaco War
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... Wikipedia
Dates: Sep 9, 1932 – Jun 12, 1935
Result: Paraguayan victory
Territorial changes: Most of the disputed area awarded to Paraguay
Location: Paraguay, Bolivia, Gran Chaco, and more