
Browse Historical Events by Month: What Happened in August?
Explore key moments from August in U.S. and world history — organized by year. Dates for earlier events may be approximate.
Note: Sources for the historical content shown, include research and reviews of relevant Online History Resources or printed material. When possible, we show a link to a source which provides additional or unique perspective about the event.
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In one of the worst maritime disasters, 900 men drowned on the British battleship Royal George. A gust of wind allowed water to flood into open gun ports as the ship was being repaired. The ship sank within minutes.
President George Washington leads a militia force of 12,950 men towards Western Pennsylvania to subdue the Whiskey Rebellion, warning locals "not to abet, aid, or comfort the Insurgents aforesaid, as they will answer the contrary at their peril." More
Ecuador Independence Day - Celebration of the first Ecuadorian patriot uprising against Spanish rule and original proclamation of independence. The movement failed and the leaders of the movement were executed. On 1822 Ecuador won independence from Spain as part of the confederation of Gran Colombia on the decisive Battle of Pichincha. The confederation of Gran Colombia was comprised of what is now the countries of Panama, Colombia, and Venezuela. On May 13, 1830, Ecuador seceded and became a separate independent republic.
During the War of 1812, British forces capture Washington, D.C. and burn down the White House, the Capitol, and other public buildings along with a number of private homes. The burning was in retaliation for the earlier American burning of York (Toronto). Shortly before the arrival of the British forces, an iconic portrait of George Washington is removed from the White House walls, to prevent it being looted by British troops. First lady, Dolley Madison is credited for saving the portrait. The portrait was actually a copy of Gilbert Stuart's original. President Madison served the rest of his term residing at the city’s Octagon House. It was not until 1817 that the newly elected president James Monroe moved back into the reconstructed building.
Spain recognizes Mexico independence with the signing of the Treaty of Córdoba, Spain finally recognized the independence of the First Mexican Empire. More
Bolivia declaration of Independence.
Uruguay Independence day from the Empire of Brazil. Declaration of independence and union with the United Provinces of the Río de la Plata.
Slavery is abolished throughout the British Empire, including in the British colonies of the Caribbean and North America.
Slavery is abolished in Jamaica where it had been introduced in 1509.
Brigham Young is chosen to lead the Mormon Church. More
The act establishing the Smithsonian Institution for "the Increase and Diffusion of Knowledge among Men," is passed by the U.S. Congress and signed into law by President James K. Polk. The Institution was founded with funds from the Englishman James Smithson (1765–1829) according to his wishes “under the name of the Smithsonian Institution, an establishment for the increase and diffusion of knowledge.” A bequest to a country that he had never visited. The Smithsonian Institution is now the world's largest museum, education, and research complex. More
Eunice Newton Foote makes first public scientific mention of the upcoming "Greenhouse effect". Her paper , titled “Circumstances Affecting the Heat of the Sun’s Rays,” was presented at a meeting of the American Association for the Advancement of Science (AAAS). Foote' s short paper included a prescient conclusion; “An atmosphere of that gas (Carbon Dioxide) would give to our earth a high temperature,” describing the phenomenon we now call the greenhouse effect, the main cause of climate change. More
The first successful transatlantic telegraph line is completed. Queen Victoria of the United Kingdom sends a telegraph to U.S. President James Buchanan. Near-instantaneous communication between Europe and North America. Become a reality.
The Revenue Act is signed by President Lincoln imposing the first federal income tax. The action was prompted by the financial requirements of the Civil War. At first, Congress placed a flat 3-percent tax on all incomes over $800,and later modified this principle to include a graduated tax. Congress repealed Lincoln’s tax law in 1871, but in 1909 passed the 16th Amendment, which set in place the federal income-tax system used today. Congress ratified the 16th Amendment in 1913. More
Abraham Lincoln replies to Horace Greeley's New York Tribune editorial entitled “The Prayer of Twenty Millions". More
Battle of Mobile Bay -- Admiral David G. Farragut, leads a fleet of fourteen wooden ships and four ironclads and delivers a much needed victory for the Union and immortalizes the phase "Damn the torpedoes! - Full speed ahead!” Farragut became the first U.S. Navy’s full admiral. At the time of his death in 1870, he had served a total of 59 years in uniform. More
The International Committee of the Red Cross (ICRC), created in 1863 comes into being as the draft convention submitted to the Geneva Convention for the Amelioration of the Condition of the Wounded and Sick of Armies in the Field, conference is adopted by 12 nations at meeting. "The ICRC is an independent, neutral organization ensuring humanitarian protection and assistance for victims of armed conflict and other situations of violence." More
James I. Waddell, Commander of the CSS Shenandoah learns the war is over from the bark Barracouta. More
President Johnson issued a proclamation announcing the end of the American Civil War: "And I do further proclaim that the said insurrection is at an end and that peace, order, tranquility, and civil authority now exists in and throughout the whole of the United States of America." The proclamation officially closed a costly, bloody, and deadly chapter in its nation's history that started at Fort Sumter several years and incurred the loss of 620,000 Union and Confederate soldiers. More