In Haiti and the Dominican Republic, the United States:
O
A. Encouraged governments to draft new national constitutions.
O
B. Occupied the nations with military forces until debts were repaid.
O
C. Occupied the nations with military forces until European forces
left.
D. Forced governments to accept their status as insular territories.

B. Occupied the nations with military forces until debts were repaid

Explanation:

a p e x

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)