Who was Japan's largest ally in World War 2?

Answer 1

Honestly They Had no Ally It was them agaist everyone else nobody funded them although Hitler Said he was to Pay all members of The Axis Powers at the End of the war when he had become Ruler of the world so to speak no money was found that's why Italy Turned into an Ally for the U.S and The U.K so to answer the Question there was no ally for them