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:

missouri compromise of 1820 which prohibited slavery

after the aryan's settled in india they changed for the better i bellieve they changed from nomads having to keep moving to being farmers   they were aswell avaible to turn the ganges river into farmland.   which is great they added a big affect on farming as we know of it today.