Your answers are Gana, Mali, and Songhai.
1507 is the year it was painted
The progressive era brought significant reforms to American industrial capitalism and to the American political system, through participation and activism by ordinary Americans. The progressives had organized to improve the working and living conditions for poor people, only really to address the glaring social and environmental problems, as well as expand opportunies for democratic involvement in the political system.
Answer is tax base, the rest are all very important
