What technological and economic factors combined to lead to the explosive growth of american cities at this time?

A confluence of factors rendered city life more attractive and feasible at the late nineteenth century.

Technology including electricity and telecommunications encouraged companies to grow and expand in towns, and skyscrapers allowed comparatively small geographical areas to continue to grow.

The growing need for workers has prompted a large influx of unemployed people both from the United States ' rural areas and Eastern and Southern Europe.

Urban housing, and also infrastructure including transportation and hygiene, has increased accordingly, while cities have struggled to cope with the rising demand.

Overall, technological advancements and a booming population contributed to American cities rising as never before.

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.