Exclude and deport aliens that supported communism.
Answer:
In 1898, the Spanish-American War broke out, and the strategic use of the naval base at Pearl Harbor during the war convinced Congress to approve formal annexation. Two years later, Hawaii was organized into a formal U.S. territory and in 1959 entered the United States as the 50th state.
Explanation:
The answer is "The social reform movements of the late 19th and early 20th centuries were responding primarily to economic and social inequality, and were trying make it easier for "average" working people and people of color to be able to advance in society."