Why were racial barriers in hiring temporarily broken down?

War.

Explanation:

In war, many Americans went out to war, and that meant there were a shortage of people to work. That means that people hiring had no choice but to hire people of color.

Because Black people were tired of being treated like dogs, No . . . dog's back than had a sense of luxury and comfort, a black person had to worry about losing their life everyday, the same thing is happening in the world today, usa is supposed to be the best country in the world, but if you ask me it is the most corrupt. cops are supposed to maintain peace? they bring riots and war because they kill a black man EVERYDAY! Think of how many black people died but there was no camera to report it. This is wrong. This needs to stop. Black live matter.

Explanation:

it refers to race, i am pretty sure this was a popular term in nazi germany or something.

the gutenberg bible was and about 180 copies were sold/made