Answer:
C, segregation. Segregation is the act of segregating/separating different races from each other, such as blacks and whites.
Explanation:
seg·re·ga·tion
/ˌseɡrəˈɡāSH(ə)n/
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noun
the action or state of setting someone or something apart from other people or things or being set apart.
"the segregation of pupils with learning difficulties"
At the beginning America was too weak to fight so it would affect us back then because we were not prepared
He started the breakfast club....