What was a main purpose for organizing labor unions?

The main purpose of organizing labor unions was to sell and buy labor for less money and also to gather large workforces of people to work in factories and other manufacturing facilities.

germany

explanation:

a rocket engine utilizes collected rocket explosive mass for producing its high-speed propulsive jet. rocket engines are effect engines, achieving thrust in accordance with newton's third law. maximum rocket engines use flaming, although non-combusting methods (such as cold gas thrusters) also exist.