Wikimedia Commons/William_Avery Ida B. Wells-Barnett Ida B. Wells published “Southern Horrors: Lynch Law in All Its Phases” ...

Wikimedia Commons/USGS The Love Canal Disaster William T. Love started digging a canal in 1894 near Niagara Falls to create ...

Wikimedia Commons/Karanacs The Fall of the Alamo Mexican forces attacked the Alamo at dawn on March 6, 1836, ending a 13-day ...

Wikimedia Commons/The Germantown Quakers The Germantown Protest, 1688 Four German Quakers wrote the first protest against ...

Bingham Canyon Mine Utah Copper and Boston Consolidated Mining Company built the “largest industrial mining complex in the ...

Wikimedia Commons/Jim Evans The Battle of San Jacinto The Battle of San Jacinto took place on April 21, 1836, in what is now ...

Shutterstock Gateway Arch National Park The tall steel arch in St. Louis marks America’s smallest national park. The 91-acre ...

Shutterstock Libby, Montana Gold miners found vermiculite in Libby, Montana in 1881. Edgar Alley saw this mineral expand when ...

Wikimedia Commons/Middleton, Strobridge & Co., lithographer; Mathews, Alfred Edward, 1831-1874, artist The 47-day Siege of ...

Wikimedia Commons/Ser Amantio di Nicolao The Slave Pen of 1820s Alexandria, Virginia A brick building at 1315 Duke Street in ...

Wikimedia Commons/Unknown photographer, from Historic sketches of the South by Emma Langdon Roche, publisher: New York: The ...

Shutterstock The African Burial Ground in Lower Manhattan, New York From the late 1600s to 1794, a 6.6-acre plot in Lower ...