1932 CE

The Chaco War erupts between Bolivia and Paraguay over control of the Gran Chaco, becoming one of South America’s deadliest conflicts of the 20th century; the Siamese revolution of 1932 peacefully ends centuries of absolute monarchy in Siam and establishes a constitutional government; the 1932 Summer Olympics are held in Los Angeles, showcasing athletic achievement amid the hardships of the Great Depression; the January 28 incident in Shanghai sees Japanese forces clash with Chinese troops, heightening tensions in East Asia and foreshadowing broader conflict; the Colombia–Peru War breaks out over disputed Amazonian territory, leading to months of fighting before a negotiated settlement; and the May 15 incident in Japan results in the assassination of Prime Minister Inukai Tsuyoshi by young naval officers, signaling a shift toward militarism in Japanese politics.

In the 1930s, the 20th century.