During the First World War, Germany was allied with theAustro-Hungarian Empire, the Ottoman Empire, and Italy. Italy laterchanged sides in the war. During the Second Word War, Germany wasoriginally allied with Italy, Japan, and the Soviet Union. Germanylater betrayed the Soviet Union in 1942. Nazi Germany alsoestablished pro-Nazi puppet governments in Romania, Hungary,Bulgaria and Slovakia, and Japan established a puppet government inThailand.