June 30, 1520: Faced with an Aztec revolt against their rule, forces under the Spanish conquistador Hernán Cortés fight their way out of Tenochtitlan at heavy cost. Known to the Spanish as La Noche Triste, or “the Night of Sadness,” many soldiers drowned in Lake Texcoco when the ...

At midnight on July 1, 1997, Hong Kong reverts back to Chinese rule in a ceremony attended by British Prime Minister Tony Blair, Prince Charles of Wales, Chinese President Jiang Zemin and U.S. Secretary of State Madeleine Albright. A few thousand Hong Kongers protested the turnover, which was otherwise celebratory ...

On July 2, 1964, U.S. President Lyndon B. Johnson signs into law the historic Civil Rights Act in a nationally televised ceremony at the White House. In the landmark 1954 case Brown v. Board of Education, the U.S. Supreme Court ruled that racial segregation in schools was unconstitutional. The 10 years ...

On the third day of the Battle of Gettysburg, Confederate General Robert E. Lee’s last attempt at breaking the Union line ends in disastrous failure, bringing the most decisive battle of the American Civil War to an end. In June 1863, following his masterful victory at the Battle of Chancellorsville, ...

In Philadelphia, Pennsylvania, the Continental Congress adopts the Declaration of Independence, which proclaims the independence of the United States of America from Great Britain and its king. The declaration came 442 days after the first volleys of the American Revolution were fired at Lexington and Concord in Massachusetts and marked an ...

On July 5, 1946, French designer Louis Réard unveils a daring two-piece swimsuit at the Piscine Molitor, a popular swimming pool in Paris. Parisian showgirl Micheline Bernardini modeled the new fashion, which Réard dubbed “bikini,” inspired by a news-making U.S. atomic test that took place off the Bikini Atoll in ...

On July 6, 1957, Althea Gibson claims the women’s singles tennis title at Wimbledon and becomes the first African American to win a championship at London’s All England Lawn Tennis and Croquet Club. Gibson was born on August 25, 1927, in Silver, South Carolina, and raised in the Harlem section of ...

On July 7, 1930, construction of the Hoover Dam begins. Over the next five years, a total of 21,000 men would work ceaselessly to produce what would be the largest dam of its time, as well as one of the largest manmade structures in the world. Although the dam would take ...

On July 8, 1776, a 2,000-pound copper-and-tin bell now known as the “Liberty Bell” rings out from the tower of the Pennsylvania State House (now Independence Hall) in Philadelphia, summoning citizens to the first public reading of the Declaration of Independence. Four days earlier, the historic document had been adopted ...

In Dayton, Tennessee, the so-called Scopes Monkey Trial begins with John Thomas Scopes, a young high school science teacher, accused of teaching evolution in violation of a Tennessee state law. The law, which had been passed in March, made it a misdemeanor punishable by fine to “teach any theory that denies ...

In one of the most famous duels in American history, Vice President Aaron Burr fatally shoots his long-time political antagonist Alexander Hamilton. Hamilton, a leading Federalist and the chief architect of America’s political economy, died the following day. Alexander Hamilton, born on the Caribbean Island of Nevis, came to the American ...

Walter Mondale, the leading Democratic presidential candidate, announces that he has chosen Representative Geraldine Ferraro of New York as his running mate. Ferraro, a daughter of Italian immigrants, had previously gained recognition as a vocal advocate of women’s rights in Congress. Ferraro became the first female vice presidential candidate to ...

Outraged and saddened after the acquittal of George Zimmerman, the Florida man who killed a Black teenager in 2012, Oakland, California resident Alicia Garza posts a message on Facebook on July 13, 2013. Her post contains the phrase "Black lives matter," which soon becomes a rallying cry and a movement ...

Parisian revolutionaries and mutinous troops storm and dismantle the Bastille, a royal fortress and prison that had come to symbolize the tyranny of the Bourbon monarchs. This dramatic action signaled the beginning of the French Revolution, a decade of political turmoil and terror in which King Louis XVI was overthrown ...

On July 15, 2006, the San Francisco-based podcasting company Odeo officially releases Twttr—later changed to Twitter—its short messaging service (SMS) for groups, to the public. Born as a side project apart from Odeo’s main podcasting platform, the free application allowed users to share short status updates with groups of friends by ...

On July 16, 1945, at 5:29:45 a.m., the Manhattan Project yields explosive results as the first atom bomb is successfully tested in Alamogordo, New Mexico. Plans for the creation of a uranium bomb by the Allies were established as early as 1939, when Italian emigre physicist Enrico Fermi met with U.S. ...

Disneyland, Walt Disney’s metropolis of nostalgia, fantasy and futurism, opens on July 17, 1955. The $17 million theme park was built on 160 acres of former orange groves in Anaheim, California, and soon brought in staggering profits. Today, Disneyland hosts more than 18 million visitors a year, who spend close ...

On July 18, 1940, Franklin Delano Roosevelt, who first took office in 1933 as America’s 32nd president, is nominated for an unprecedented third term. Roosevelt, a Democrat, would eventually be elected to a record four terms in office, the only U.S. president to serve more than two terms. Roosevelt was born ...

Although there is some debate about the exact date, on what was likely July 19, 1799, during Napoleon Bonaparte’s Egyptian campaign, a French soldier discovers a black basalt slab inscribed with ancient writing near the town of Rosetta, about 35 miles east of Alexandria. The irregularly shaped stone contained fragments ...