How could people change their caste in life according to Hindu beliefs?

The Hindu idea of reincarnation kept the caste system alive. Hindus believe when a person dies, he or she is reincarnated as another being, hopefully in a higher caste. The only way to move to a higher caste in the next life is to strictly obey the rules of one's current caste.

Explanation:

the labor movement in the united states grew out of the need to protect the common interest of workers

for those in the industrial sector organized labor unions fought for better wages reasonable hours and safer working conditions

  in the 19th century trade unionism was mainly a movement of skilled workers.

hope this

yes.

explanation:

because it let the japanese know who had the upper hand in the war.