Answer:
freed African Americans from slavery
Explanation:
learnt in class
A)Developed new medical practices
Some reasons were that Native Hawaiians were against U.S. annexation, and the controversy of how US marines used force against the Queen Liliuokalani of Hawaii (held her at gunpoint) and also the fact that President Grover Cleveland himself was against annexation.
Answer:
B. The president pro tempore serves as the head of the Senate in
place of the vice president
Explanation: