August 21

Portuguese forces led by Prince Henry the Navigator capture Ceuta from the Marinids, marking an early milestone of Portuguese overseas expansion.

Portuguese forces under the command of Prince Henry the Navigator captured the North African port city of Ceuta from the Marinid dynasty, an early conquest that is often cited by historians as marking the symbolic beginning of the Age of Portuguese Exploration.

Pueblo peoples seize Santa Fe from Spanish colonizers during the Pueblo Revolt.

Frustrated by broken promises and continued Spanish colonial oppression, Pueblo peoples across present-day New Mexico coordinated a widespread uprising that successfully drove Spanish settlers from the region for over a decade, one of the most successful indigenous rebellions against European colonization in North American history.

James Cook formally claims eastern Australia for Great Britain, naming the territory New South Wales.

British explorer Captain James Cook formally claimed the eastern coastline of the Australian continent for Great Britain, naming the newly claimed territory New South Wales, setting the stage for British colonization beginning with the establishment of a penal colony less than two decades later.

An uprising by enslaved Africans in Saint-Domingue marks the beginning of the Haitian Revolution.

Enslaved people in the French colony of Saint-Domingue held a clandestine religious ceremony that is traditionally credited with sparking a coordinated uprising against colonial slavery, launching what became the successful Haitian Revolution and the eventual establishment of the world's first Black-led republic.

The Mona Lisa is stolen from the Louvre by museum employee Vincenzo Peruggia.

The theft of Leonardo da Vinci's famous portrait from the Louvre Museum by an Italian handyman, who believed the painting rightfully belonged in Italy, generated massive international publicity and, paradoxically, significantly boosted the painting's fame once it was recovered over two years later.

American forces defeat Japanese troops at the Battle of the Tenaru during the Guadalcanal campaign.

American Marines successfully repelled a poorly coordinated Japanese assault along the banks of the Tenaru River during the early stages of the Guadalcanal campaign, inflicting devastating casualties on the attacking force through concentrated machine gun and artillery fire. The lopsided victory provided an important morale boost and secured an early strategic foothold in the broader Pacific island-hopping campaign against Japan.

President Dwight Eisenhower proclaims Hawaii the 50th U.S. state.

Following decades as a U.S. territory and a local referendum showing overwhelming public support, President Eisenhower signed a proclamation formally admitting the Hawaiian Islands as the 50th and final state to join the United States. Hawaii's statehood, achieved just months after Alaska's, completed the current fifty-state configuration of the American union.

Latvia declares the restoration of full independence following decades of Soviet occupation.

Taking advantage of the accelerating collapse of Soviet central authority following the failed August coup against Mikhail Gorbachev, Latvia's parliament formally declared the restoration of full independence, reasserting the sovereignty it had lost following forcible Soviet annexation during World War II. The declaration was quickly followed by international recognition and eventual Latvian membership in the European Union.

Chemical weapons attacks in the Ghouta region of Syria kill hundreds of people.

Rockets containing the nerve agent sarin struck rebel-held suburbs of Damascus during Syria's civil war, killing hundreds of civilians in one of the deadliest chemical weapons attacks of the twenty-first century and prompting international outrage over the use of banned munitions.

A total solar eclipse crosses the continental United States, visible along a path from Oregon to South Carolina.

A total solar eclipse swept across the continental United States from Oregon to South Carolina, the first path of totality to cross the entire country coast to coast in nearly a century, drawing millions of spectators and widespread media coverage.