When was obama elected as president and when was he no longer the president?

About how many european immigrants were processed at the facilities on ellis island

Explain the importance of president harry truman's order to integrate the u.s. military and the federal government.

European imperialism in the 19th century was largely motivated by a desire to: o a. assert power over other parts of the world. b. end the racist policies practiced in many foreign countries. o c. defend europe from aggressive foreign armies. d. relocate ethnic and religious minorities within national borders.