On June 14, 1775, the Continental Army, forerunner of the United States Army, was created.

In 1777, the Second Continental Congress approved the original American flag.

In 1846, a group of U.S. settlers in Sonoma proclaimed the Republic of California.

In 1922, Warren G. Harding became the first president heard on radio, as Baltimore station WEAR broadcast his speech dedicating the Francis Scott Key memorial at Fort McHenry.

In 1943, the U.S. Supreme Court ruled 6-3 that public school students could not be forced to salute the flag of the United States.

In 1954, President Dwight D. Eisenhower signed a measure adding the phrase “under God” to the Pledge of Allegiance.

In 1972, the Environmental Protection Agency ordered a ban on domestic use of the pesticide DDT.