African americans were let go from the factory jobs when servicemen returned home from the war

I would say 3 is the answer. There was still plenty of racial tension Stateside; in fact, as AAs began serving in the military and coming back home, their renewed cries for equality began the early roots of the final stages of the Civil Rights Movement.

They also began protesting more actively because those who stayed Stateside and took up jobs vacated by servicemen felt angered at being forced to give up their jobs at the end of the war.

I hope I answer your question.

3

Explanation:

Althoguh thei high rate of prejudice americans were forced to accep black people in the factories because the white ones were in the war, not long after black men had to be accepted and go war as well. When war was over all guys had to be back and life had to move on, because of the above mentioned prejudice  whit people got their jobs back and theblack ones had to leave fo them. Living a hard live black people had to be unemployed again and start fighting for their rights again.

question is unclear.

i can't sorry.

post the full question so i can .

worldwide, 780 million people do not have access to an improved water source. an estimated 2.5 billion people lack access to improved sanitation (more than 35% of the world's population)