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8 films
40 below zero temperatures force bison to dig for food while wolves hunt in packs of 25, targeting the most vulnerable calves on the Great Plains.
Nearly 260 men, women, and children defend the Alamo against 5,000 Mexican troops led by General Santa Anna during a key moment in American history.
National Park spans 244,000 acres and is home to the American bison, which weighs up to 2,000 pounds and engages in annual rutting battles.
1.5 billion acres of public lands were acquired under the Homestead Act, which was enacted in 1862 to promote settlement in the United States.
In 1989, David Remnick discovered a series in The New Yorker called 'The Great Plains,' which reshaped his understanding of American writing.
Over 4,000 years ago, crocodiles became trapped in the Ennedi Massif when water receded, now surviving in the region's scattered gueltas.
Building the Cahokia Mounds required moving 55 million cubic feet of earth by hand, creating what is now the largest known prehistoric earthwork in the Western Hemisphere.
By 1845, the United States population has surged to 17 million, prompting President James K. Polk to pursue aggressive westward expansion.
