Answer:
B. Militarism
Explanation:
Through the process of elimination:
Alliances are based on certain powers helping each other, nationalism is a strong sense of loyalty and pride for one's nation, and imperialism is the act of conquering a land to expand an empire. :)
The concept of militarism:
Basically a strong sense that a group of people or nation should establish and maintain a strong military, which is used for the nation's interests, war, defense, and more.
Many writers to reevaluate the myth of American heroes
The 13th amendment abolished slavery within the U.S or any place subject to their jurisdiction
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