100 POINTS! What is a labor union, why did they become popular, and how did they force businesses to negotiate?

A Labor union is a collection of workers usually in industy areas and they group together to get stuff like better working conditions or pay and because the workers are grouped together its easier for them to negotiate with a company.

Explanation:

yes the one above me is correct i got a hundred with it

the noble might have thought that the system was far because they had lot of things and riches and the serf would have thought that the feudal system was un fair because of the way they were treated.

the correct answer is:   the domino theory states that if one country in a region came under the influence of communism, then the surrounding countries would follow in a domino effect.