What argument
did frederick jackson
turner make to justify
american imperialism?

Turner said that colonial expansion served the purpose that the frontier had for earlier Americans

Explanation:

it took two men to wrestle rome back from chaos and turn a republic into an empire. in the first century bc, rome was a republic. power lay in the hands of the senate, elected by roman citizens. but the senators were fighting for power between themselves.

the main objectives of the progressive movement were eliminating problems caused by industrialization, urbanization, immigration, and political corruption.