During the late 19th century, what pracitces were used by employers against workers?

The code talkers work contributed mostly to

Me! these questions are based on american people in the south essential questions: question 1: for what reasons will one group of people exploit another?focus questions: question 1: what influenced the development of the south more: geography, economy, or slavery?question 2: what were the economic, political and social arguments for and againsts slavery in the first half of the 19th century.

How does mahan’s thesis support the concept of manifest destiny