The main reason behind US civil right movement gaining new momentum after World War II can be attributed to the rallying of blacks in Montgomery and Alabama by Rosa parks. So the correct option to the given question is option “B”. This was the time of great turmoil when blacks were segregated from the whites by certain laws. These laws gave numerous privileges to the white people and increased the suffering of the black people. Numerous blacks also migrated from the colonies to the US that put fuel into fire.
C ;
The US civil rights movement gained momentum after World War II due to the returning African American veterans demanding equality, an expanding black middle class, key events like Rosa Parks's refusal to give up her bus seat, and significant legal victories like Brown v. Board of Education. These factors combined to energize activism and mobilize communities for change. Therefore, the correct answer is option 'B.'
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