Why were women, African-Americans, and the Chinese often excluded from unions?

President Chester A. Arthur signed the Chinese Exclusion Act into law, implementing a ban on Chinese immigration to the United States that eventually lasted for over 60 years until the 1943 Magnuson Act. This landmark event in the history of human migration tells us a lot about the politics and economics of anti-immigration sentiment in general.

Chinese Exclusion Act into law, implementing a ban on Chinese immigration to the United States

Explanation:

Relatively early in colonial America, Southern landowners recognized that they could maximize their profits by using African slaves to work their land, and a body of law was implemented to rationalize permanent race-based enslavement. Over the years, after every real or imagined slave uprising, these laws were made harsher, and black workers were further stigmatized and dehumanized.

answer; i believe the correct answer is (crops);