Bicameral system, a system of government in which the legislature comprises two houses. The modern bicameral system dates back to the beginnings of constitutional government in 17th-century England and to the later 18th century on the continent of Europe and in the United States.
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Wilson tried to keep the United States neutral during World War I but ultimately called on Congress to declare war on Germany in 1917. After the war, he helped negotiate a peace treaty that included a plan for the League of Nations.
