During world war 2 earning for workers increased because

Many Americans feared that at the end of World War ll and the subsequent drop in military spending might bring back the hard times of the Great Depression. But instead, pent-up consumer demand fueled exceptionally strong economic growth in the post-war period.

People were sick of being in war

they thoght they were going to nuke each other

this is a good question! i'll do some research and come back when i have the answer!