Tarzan and the Ant Men

Tarzan crashes his airplane in a hidden corner of Africa in Tarzan and the Ant Men (1924). He first falls in with the Alalus, a tribe ruled by its women. Then he is captured by the Minunians, a race of tiny people whose rival city-states are always at war. Shrunk by one of their scientists to their own size, he becomes a slave among them and must find a way back to his full height.