Who did the Knights of labor help?

The Knights of Labor, founded in 1869, was the first major labor organization in the United States. The Knights organized unskilled and skilled workers, campaigned for an eight hour workday, and aspired to form a cooperative society in which laborers owned the industries in which they worked

Explanation: https://www.history.com/topics/19th-century/knights-of-labor

Mostly they helped shopkeepers, labourers, and farmers, skilled and unskilled.

this statement is   true

it reintroduced the two-party system.