The power of political machines declined during which period?

The correct answer is the progressive era.

Progressive era is the period when the power of political machines was declined.

There was political reforms and social activism in United states during this period. The main purpose for progressive movement was to eliminate problems which were being caused by immigration, urbanization, political corruption and industrialization.

This movement their aim was to target the bosses and the political machines.

The activists reformed public education, insurance, medicine, industry and finance.

not too sure on this one thinking tyo organize the division of africa

as general terms,  indian territory,  the indian territories, or  indian country  describe an evolving land area set aside by the  united states government  for the relocation of  native americans  who held  aboriginal title  to their land. in general, the tribes ceded land they occupied in exchange for  land grants  in 1803. the concept of an indian territory was an outcome of the 18th- and 19th-century policy of  indian removal. after the  civil war(1861–1865), the policy of the government was one of  assimilation.