What is the connection between the civil rights movement and world war 2

Explanation:

The fight against fascism during World War II brought to the forefront the contradictions between America's ideals of democracy and equality and its treatment of racial minorities. Throughout the war, the NAACP and other civil rights organizations worked to end discrimination in the armed forces.

this is hard!  

the gas pressure p, gas volume v, and gas temperature t are given in the formula:   pv=nrt,

r is the gas constant, and n is the number of gas moles.

if the container is cooled and remains under atmospheric pressure, where r is a constant that does not change, the volume of the container remains the same, the conclusion is drawn that, with all other values ​​unchanged, the number of gas moles n, is decreases.

the right answer is a.