The United States of America (USA), commonly referred to as the United States (US), America, or simply the States, is a federal republic consisting of 50 states, 16 territories, and a federal district. The 48 contiguous states and the federal district of Washington, D.C., are in central North America between Canada and Mexico. The state of Alaska is the northwestern part of North America and the state of Hawaii is an archipelago in the mid-Pacific. The country also has five populated and nine unpopulated territories in the Pacific and the Caribbean. The largest of these territories are Puerto Rico and the American Virgin Islands which are an official part of the United States. At 3.79 million square miles (9.83 million km2) in total and with around 316 million people, the United States is the fourth-largest country by total area and third largest by population. It is one of the world's most ethnically diverse and multicultural nations, the product of large-scale immigration from many countries. The geography and climate of the United States is also extremely diverse, and it is home to a wide variety of wildlife.
Paleo-indians migrated from Asia to what is now the U.S. mainland around 15,000 years ago, with European colonization beginning in the 16th century. The United States emerged from 13 British colonies located along the Atlantic seaboard. Disputes between Great Britain and these colonies led to the American Revolution. On July 4, 1776, delegates from the 13 colonies unanimously issued the Declaration of Independence. The ensuing war ended in 1783 with the recognition of independence of the United States from the Kingdom of Great Britain, and was the first successful war of independence against a European colonial empire. The current Constitution was adopted on September 17, 1787. The first 10 amendments, collectively named the Bill of Rights, were ratified in 1791 and guarantee many fundamental civil rights and freedoms.
Theodore "T.R." Roosevelt, Jr. (// ROH-zə-velt;) (October 27, 1858 – January 6, 1919) was the 26th President of the United States (1901–1909). He is noted for his exuberant personality, range of interests and achievements, and his leadership of the Progressive Movement, as well as his "cowboy" persona and robust masculinity. He was a leader of the Republican Party and founder of the first incarnation of the short-lived Progressive ("Bull Moose") Party of 1912. Before becoming President, he held offices at the city, state, and federal levels. Roosevelt's achievements as a naturalist, explorer, hunter, author, and soldier are as much a part of his fame as any office he held as a politician. Roosevelt was 42 years old when sworn in as President of the United States in 1901, making him the youngest president ever. Roosevelt was also the first of only three sitting presidents to have won the Nobel Peace Prize. The Teddy bear is named for him, despite his contempt for being called "Teddy".
Born into a wealthy family in New York City, Roosevelt was a sickly child who suffered from asthma and stayed at home studying natural history. To overcome his physical weakness, he embraced a strenuous life. Home-schooled, he became an eager student of nature. He attended Harvard University, where he studied biology, boxed, and developed an interest in naval affairs. In 1881, one year out of Harvard, he was elected to the New York State Assembly, where he became a leader of the reform faction of his Republican Party (the "GOP"). His The Naval War of 1812 (1882) established his professional reputation as a serious historian; he wrote numerous books on hunting, the outdoors, and current political issues, as well as frontier history. In 1884, his first wife and his mother died on the same day. He temporarily left politics and went to the frontier, becoming a rancher in the "Badlands" in the Dakotas. Returning to New York City, he ran for mayor in 1886, finishing third with 60,000 votes. He later gained fame by taking vigorous charge of the city police. At the national level, he was a leader in civil service reform. The Spanish–American War broke out in 1898 while Roosevelt was, effectively, running the Department of the Navy. He promptly resigned and formed the Rough Riders, a volunteer cavalry regiment that fought in Cuba. The war hero was elected governor in 1898 and in 1900 was nominated for vice president. He successfully energized the GOP base as a highly visible campaigner to reelect President William McKinley, Jr. on a platform of high tariffs, the gold standard, imperialism, prosperity at home and victory abroad.
Alice Hathaway Lee Roosevelt (July 29, 1861 – February 14, 1884) was the first wife of Theodore Roosevelt. They had one child, Alice Lee Roosevelt.