Passage: was the period between 1942 and 1945 during World War II, when Burma was occupied by the Empire of Japan. The Japanese had assisted formation of the Burma Independence Army, and trained the Thirty Comrades, who were the founders of the modern Armed Forces (Tatmadaw). The Burmese hoped to gain support of the Japanese in expelling the British, so that Burma could become independent.In 1942 Japan invaded Burma and nominally declared the colony independent as the State of Burma on 1 August 1943. A puppet government led by Ba Maw was installed. However, many Burmese began to believe the Japanese had no intention of giving them real independence.Aung San, father of future opposition leader and State Counsellor Aung San Suu Kyi, and other nationalist leaders formed the Anti-Fascist Organisation in August 1944, which asked the United Kingdom to form a coalition with the other Allies against the Japanese. By April 1945, the Allies had driven out the Japanese. Subsequently, negotiations began between the Burmese and the British for independence. Under Japanese occupation, 170,000 to 250,000 civilians died.

Question: Which forces ultimately caused the Japanese to be driven out?
Allies