Political changes during world war 1

The First World War destroyed empires, created numerous new nation-states, encouraged independence movements in Europe's colonies, forced the United States to become a world power and led directly to Soviet communism and the rise of Hitler.

Explanation:

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the completion of the erie canal spurred the first great westward movement of american settlers, gave access to the rich land and resources west of the appalachians and made new york the preeminent commercial city in the united states.