Put the events in order:
American revolution
Civil war
WW1
WW2
Korean War

Explanation:

1775 - The Revolutionary War begins with the Battle of Lexington and ... 1804 - Explorers Lewis and Clark set out on their journey to the Pacific Ocean. ... 1865 - The American Civil War comes to an end with General Robert E. Lee ... The U.S. joins World War II on the side of the Allies. ... 1950 - The Korean War begins.

what is the "did this mean" there is no picture. edit your question with a screenshot.

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)