How did the United States solidify themselves as a world power during World War I?

The entry of the United States into World War I changed the course of the war, and the war, in turn, changed America. ... The American Expeditionary Forces arrived in Europe in 1917 and helped turn the tide in favor of Britain and France, leading to an Allied victory over Germany and Austria in November 1918.

Explanation:

In 1898, Cuban activists launched a war of independence from Spain, and the US intervened on their side. ... The US had become a European-style imperial power. While this experiment in colonialism was short-lived and controversial at home, it began America's role as a major global power in nation.

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)