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The history of the United States Army began in 1775, as part of the United States Armed Forces. The Army's main responsibility has been in fighting land battles and military occupation. The Corps of Engineers also has a major role in controlling rivers inside the United States. The Continental Army was founded in response to a need for ...
The U.S. emerged as one of the two undisputed superpowers along with the Soviet Union, and unlike the Soviet Union, the U.S. homeland was virtually untouched by the ravages of war. During and following World War II, the United States and Britain developed an increasingly strong defense and intelligence relationship.
The origins of the American Civil War are rooted in the desire of the Southern states to preserve the institution of slavery. [1] Historians in the 21st century overwhelmingly agree on the centrality of slavery in the conflict. They disagree on which aspects (ideological, economic, political, or social) were most important, and on the North 's ...
Second Barbary War, March 3, 1815 – December 23, 1816. The United States declares war on Algiers, March 3, 1815. The Territory of Indiana is admitted to the Union as the State of Indiana (the 19th state) on December 11, 1816. The Territory of Alabama is organized, March 3, 1817.
t. e. The American Civil War (April 12, 1861 – May 26, 1865; also known by other names) was a civil war in the United States between the Union [e] ("the North") and the Confederacy ("the South"), which was formed in 1861 by states that had seceded from the Union. The central conflict leading to war was a dispute over whether slavery should be ...
The history of the lands that became the United States began with the arrival of the first people in the Americas around 15,000 BC. Numerous indigenous cultures formed. After European colonization of North America began in the late 15th century, wars and epidemics decimated indigenous societies. Starting in 1585, the British Empire colonized ...
In 1898, President McKinley led the United States to war with Spain in the Spanish–American War. In addition to guaranteeing Cuban independence, the war resulted in the United States taking control of Puerto Rico, Guam and the Philippines, as well as increasing its influence in the Caribbean. The United States also annexed Hawaii the same year.
The United States Constitution has served as the supreme law of the United States since taking effect in 1789. The document was written at the 1787 Philadelphia Convention and was ratified through a series of state conventions held in 1787 and 1788. Since 1789, the Constitution has been amended twenty-seven times; particularly important ...