All the Countries Under Japanese Control During World War II

"During World War II, Imperial Japan launched one of the most aggressive expansion campaigns in modern history, rapidly seizing territory across East Asia and the Pacific. At its peak, the Japanese empire extended from Manchuria and Korea to Southeast Asia and numerous Pacific island chains, bringing millions of people under military occupation. This vast sphere of control reshaped regional politics, economics, and societies; it also left lasting scars that still influence international relations today."

"Brunei is an oil-rich sultanate on the island of Borneo, surrounded on its land borders by Malaysia. Japanese forces invaded British Borneo, including Brunei, in mid-December 1941 and occupied it until mid-1945, when Allied operations and Japan's surrender ended their control. Cambodia, a part of French Indochina before the war, was under Japanese occupation from 1941-1945. After the war, Cambodia went through a long period of turmoil, including the brutal Khmer Rouge regime in the 1970s and later Vietnamese intervention."

Imperial Japan rapidly expanded across East Asia and the Pacific before and during World War II, occupying territories from Manchuria and Korea to Southeast Asia and numerous Pacific islands. The empire established Manchukuo in Manchuria and launched full-scale invasion of China in 1937, leading to prolonged conflict and occupation. Japanese forces seized British Borneo (including Brunei), French Indochina (including Cambodia), and significant parts of the Philippines and Papua New Guinea, as well as island territories like Nauru. Allied naval and amphibious campaigns gradually liberated Pacific islands, and Japan's 1945 surrender following Allied advances and the atomic bombings ended the occupations.

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