Shutterstock Hershey, Pennsylvania Milton Hershey broke ground for his chocolate factory in Derry Church, Pennsylvania, in ...

Wikimedia Commons/Mare Island Navy Yard The 1944 Port Chicago Explosion The Navy built Port Chicago Naval Magazine in 1942 to ...

Wikimedia Commons/Warren K. Leffler, U.S. News & World Report The 1968 Poor People’s Campaign Martin Luther King Jr. planned ...

Shutterstock Antelope Canyon Water carved this golden sandstone canyon over centuries near Page, Arizona on Navajo land. The ...

Wikimedia Commons/National Museum of the U.S. Navy The 1942 Japanese Balloon Bomb Attack (Oregon) Japan sent over 9,000 ...

Wikimedia Commons/U.S. Navy USS Silversides The USS Silversides began service on December 15, 1941, eight days after the ...

Shutterstock Manzanar National Historic Site The U.S. government forced 120,000 Japanese Americans from their West Coast ...

The 1942 Japanese Submarine Bombing of Mount Emily, Oregon The Japanese submarine I-25 reached southern Oregon in September ...

The Pearl Harbor Avenger Portsmouth Naval Shipyard got orders to build new submarines on December 15, 1941, just eight days ...

Wikimedia Commons Ancient Architects of Wisconsin’s Animal Mounds The Late Woodland people built these mounds between 750 and ...

Wikimedia Commons/Ken Thomas Cataloochee Valley Cataloochee Valley was home to over 750 people by the early 1900s in what is ...

Shutterstock Picher, Oklahoma Picher began in 1913 after miners found lead and zinc ore on land owned by Harry Crawfish, a ...