The coal miners' battle for dignity led to the largest armed insurrection since the American Civil War.
The most daring and innovative accomplishment at the turn of the 20th century.
Schools taught Native Americans to imitate white men in a liberal "civilizing" mission in 1875.
High on a granite cliff in South Dakota's Black Hills tower the huge carved faces of four American presidents: George Washington, Thomas Jefferson, Abraham Lincoln, and Theodore Roosevelt.
The journey of Prince Maximilian, German naturalist, and artist Karl Bodmer, who explored the Mississippi River area from 1832-1834.
Her 1963 warnings about the effects of pesticides and herbicides sparked a revolution in environmental policy.
Before radar had been invented a devastating hurricane hit America, surprising residents of the East Coast and killing more than 600 people.
Today one of the most-recognized figures in American literary history, poet Walt Whitman was denounced by critics in his own time.