One major reason for the enterance of the United States into World War I was <span>to maintain freedom of the seas.</span>
A. The vice president automatically assumes the presidency.
Although it would only be until the President has recovered, the Vice President would become the Acting President as long as the President was unable to fulfill his duties.
According the the Homestead Act of 1862, the only two valid answers are A. Settlers had to promise to avoid contact with American Indian tribal lands and D. Settlers had to improve the land (e.g., by buying a house) to keep it.