The power to regulate commerce between foreign countries and among the states was given to A. the states.
B. Congress.
C. the President.
D. none of these groups.

Congress

Explanation:

The Commerce Clause of the United States Constitution provides that the Congress shall have the power to regulate interstate and foreign commerce. The plain meaning of this language might indicate a limited power to regulate commercial trade between persons in one state and persons outside of that state.

i beleive its 1)aids

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)