Answer:
The Indian Removal Act was signed into law on May 28, 1830, by United States President Andrew Jackson. The law authorized the president to negotiate with southern Native American tribes for their removal to federal territory west of the Mississippi River in exchange for white settlement of their ancestral lands.
Explanation:
Poll taxes, literacy tests, and grandfather clauses were used in the South after 1890 to keep african americans from voting.
As many African Americans were poor or illiterate (being foreign slaves), they usually failed tests. The Poll tax was first instituted to keep slaves from voting, but with the poorest of the poor whites complaining, they soon changed it to the literacy test, so that they can keep slaves from using their new found right of voting.
The Berlin airlift, organized by the United States, was aimed at giving goods/resources to citizens of West Berlin. This airlift lasted roughly a year and the US provided over 2 million tons of cargo to these citizens. Without this airlift and support from the United States, West Berlin was in danger of falling under the control of the Soviet Union (who at this time already controlled East Berlin).