The American bison (Bison bison), also commonly known as the American buffalo, is a North American species of bison that once roamed the grasslands of North America in massive herds. Their range once roughly comprised a triangle between the Great Bear Lake in Canada's far northwest, south to the Mexican states of Durango and Nuevo León, and east along the western boundary of the Appalachian Mountains. Because of commercial hunting and slaughter in the 19th century, the bison nearly became extinct and is today restricted to a few national parks and reserves.

Two subspecies or ecotypes have been described: the plains bison (Bison bison bison), smaller in size and with a more rounded hump, and the wood bison (Bison bison athabascae) – the larger of the two and having a taller, square hump. Furthermore, it has been suggested that the plains bison consists of a northern (Bison bison montanae) and a southern subspecies, bringing the total to three. However, this is generally not supported. The wood bison is one of the largest wild species of bovid in the world, surpassed by only the the Asian gaur and wild Asian water buffalo. It is the largest extant land animal in North America.

Theodore "Teddy" Roosevelt ( /ˈroʊzəvɛlt/ ROH-zə-velt; October 27, 1858 – January 6, 1919) was the 26th President of the United States of America (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 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; he beat out the youngest elected president, John F. Kennedy, by only one year. Roosevelt was also one of only three sitting presidents to have won the Nobel Peace Prize, the other two being Woodrow Wilson and Barack Obama.