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.

whose power in the senate is equal to the power of the speaker of the house?