How did labor unions promote workers rights?

Unions promote well-being by encouraging democratic participation and a sense of community among workers. Unions also have to promote their members' interests are collective bargaining and strikes.

Explanation: Mostly they create higher wage and benefit standards, working hours limits.

for the united states of america, 1945 to 1964 was a time of high economic growth and general prosperity. it was also a time of confrontation as the capitalist united states and its allies politically opposed the soviet union and other communist countries; the cold war had begun.

explanation:

health and medicine because people are dying from not being healthy or not strong enough medicine