What's the use of foreign labor and labor unions?

A labor union is an organization that acts as an intermediary between its members and the business that employs them. The main purpose of labor unions is to give workers the power to negotiate for more favorable working conditions and other benefits through collective bargaining.

here are some major conflicts i found. maybe pick one and do more research on it. (cause i ain't writing 6 paragraphs)

in 1877, the nez perce war took place.

1881 - president james garfield was assassinated.

1882 - the chinese exclusion act was passed.

1883 - a decision in the civil rights cases legalized racial segregation in the united states.

1887 - the dawes act was passed.

1893 - the panic of 1893 took place. (what a creative name)

and there are probably other topics you can find if you just search up "united states timeline," or "conflicts in the 19th century for america."

then once you find a topic you like find out how it affected the people of america and what not. (sorry if this feels a bit short changed, history was and never will be one of my strong topics)

answer; andrew jackson approved nullification by signing it into law,and john calhoun opposed it saying it was unconstitutional;