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21 August Through Time: Moments That Shaped History

Explore the pivotal events of 21 August—from the Mona Lisa theft and Hawaii statehood to the founding of PETA and World Senior Citizens Day—capturing history’s turning points.

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From stolen masterpieces to statehood and landmark acts of justice, 21 August carries stories of upheaval, progress, and remembrance. Let’s share these moments that remind us how history shapes our world. #ThisDayInHistory #August21 #OnThisDay #HistoryMatters #WorldSeniorCitizensDay #MonaLisa #UNOrigins #PETA #EqualEducation #HistoryGram #RememberThePast

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The Stolen Icon: Mona Lisa

On 21 August 1911, Leonardo da Vinci’s Mona Lisa was stolen from the Louvre and remained missing for two years.

Battle of Charleroi, 1914

A key early World War I engagement: the German army launched a successful attack at the Battle of Charleroi.

Foundations of the UN

In 1944, the Dumbarton Oaks Conference began—laying the groundwork for the United Nations.

Hawaii Joins the Union

Hawaii was officially declared the 50th U.S. state on 21 August 1959.

Lake Nyos Disaster

A sudden CO₂ eruption from Lake Nyos, Cameroon, in 1986 killed nearly 1,800 people.

Nat Turner Rebellion

On 21 August 1831, Nat Turner led a violent slave rebellion in Virginia, an event that shook the antebellum South.

Latvia Regains Independence

In 1991, Latvia renewed its independence following the collapse of a Soviet coup attempt.

Mars Observer Lost Contact

NASA lost communication with its Mars Observer spacecraft on this day in 1993.

PETA is Born

People for the Ethical Treatment of Animals (PETA) was founded on 21 August 1980.

World Senior Citizens Day

Every year on 21 August, we observe World Senior Citizens Day to honor elders and raise awareness of their contributions.

Jomo Kenyatta’s Freedom

Kenya’s independence leader Jomo Kenyatta was released from prison on August 21 1961.

Equal Educational Opportunities Act

The U.S. enacted the Equal Educational Opportunities Act on 21 August 1974, prohibiting educational discrimination.