Answer:
The Great Depression
Explanation:
The United States was still suffering the Great Depression before it intervened. In 1939, Roosevelt told Americans that he wouldn't get involved in World War II, however quickly declared war after the Bombing of Pearl Harbor.
The US would need workers as a result of the war effort, and employed thousands of people at a time. People had jobs for the first time in ages, and many economists believed that the Great Depression was truly over.
Answer:
The purpose/goal of the Indian Removal Act was to gain more land for the " New Americans."
Explanation: The Caucasians murdered the Indians to steal the land that was in the Indians property. They wanted the gold that was discovered in the Indians land. With their greed they decided to kill the Indians, and so they gained the Indian's land.
Free soilers or free staters
Dr Jonas Salk developwd the vaccine to prevent polio.