| 6 March 902 | Arab Caliphate [political events] | The Abbasid caliph al-Mu'tadid dies. He is the last caliph (ruler of the Islamic world) to rule in his own right; his successors are, generally, controlled by their Turkish bodyguards. |
| 6 March 1226 | Italy, Holy Roman Empire [political events] | A second Lombard League is formed by the northern Italian cities of Milan, Bologna, Brescia, Mantua, Bergamo, Turin, Vicenza, Padua, and others to oppose the Holy Roman Emperor Frederick II. |
| 6 March 1447 | Papal States, Italy [administration] | Tommaso Parentucelli is elected Pope Nicholas V. |
| 6 March 1454 | Poland-Lithuania, Prussia, Holy Roman Empire, Germany [wars] | King Casimir (Kazimierz) IV of Poland proclaims the incorporation of Prussia into Poland when the Prussian Union of Cities (led by Gdansk) and the gentry renounce allegiance to the Teutonic Order of Knights. The Thirteen Years' War follows between Poland and the Teutonic Order of Knights. |
| 6 March 1475 | Italy [births and deaths] | Michelangelo (di Lodovico Buonarroti Simoni), Italian Renaissance sculptor, painter, and architect, also poet, whose best-known works include the fresco The Last Judgement (1534–41) and the sculptures Pietà (c. 1500) and David (1504), born in Caprese, Italy (–1564). |
| 6 March 1480 | Naples, Florence, Italy, Papal States, Milan, Venice, Holy Roman Empire, Aragon [wars] | Having travelled to Naples, Italy, after receiving overtures of peace, Lorenzo de' Medici reaches agreement with Ferrante, King of Naples, for peace between Naples and Florence, Italy. The papacy, Milan, and Venice accede shortly afterward, ending the War of the Pazzi. |
| 6 March 1619 | France [births and deaths] | Savinien Cyrano de Bergerac, French satirist and dramatist, the subject of many romantic legends, whose best-known works include Histoire comique des états et empires de la lune/Comic History of the States and Empires of the Moon (1656), born in Paris, France (–1655). |
| 6 March 1629 | Savoy, Italy, Holy Roman Empire, France, Spain, Habsburg Monarchy [Thirty Years War (1618–48)] | Savoyard forces attempting to block a Habsburg attack on Charles, duc de Nevers, the French claimant in possession of the vacant north Italian duchy of Mantua, are defeated at Susa in Savoy. This involvement of Spanish forces in the War of the Mantuan Succession nevertheless diverts vital imperial resources from the struggle against the Dutch and German Protestants. |
| 6 March 1820 | USA [law and government] | The ‘Missouri Compromise’ is decided by the US Congress, allowing Missouri to enter the Union as a slave state and Maine as a nonslave state, and banning slavery in all Louisiana Purchase territories north of Missouri's southern border. |
| 6 March 1821 | Ottoman Empire, Russian Empire, Greece [revolution] | A revolt occurs in the Ottoman province of Moldavia against Turkish rule. The rebels appeal to Tsar Alexander I of Russia for help, and the prospect of a successful Russian-supported revolt while the Ottoman authorities are preoccupied with defeating regional warlords prompts a first (unsuccessful) rebellion in Greece. |
| 6 March 1836 | Mexico, Republic of Texas [wars] | Two hundred Texans are killed at the isolated fortress of Alamo in San Antonio, Texas, when 3,000 Mexican troops commanded by Gen Antonio Lopes de Santa Anna overrun the Republic of Texas garrison. |
| 6 March 1888 | USA [births and deaths] | Louisa May Alcott, US author of children's books, best known for Little Women (1869), dies in Boston, Massachusetts (65). |
| 6 March 1900 | Germany [births and deaths] | Gottlieb Daimler, German mechanical engineer who built one of the first successful cars powered by an internal combustion engine, dies in Cannstatt, Germany (65). |
| 6 March 1957 | Ghana [decolonization] | The Gold Coast (comprising the former colonies of the Gold Coast, Ashanti, the Northern Territories, and British Togoland) becomes an independent state within the British Commonwealth and is renamed Ghana, with Kwame Nkrumah as prime minister. On 8 March Ghana is admitted to the United Nations (UN). |
| 6 March 1983 | West Germany [elections] | Chancellor Helmut Kohl's ruling Christian Democratic Union wins the general election in West Germany, with the Green Party gaining its first seats in the Bundestag. |
| 6 March 2006 | UK [banking and finance] | HSBC, the UK's largest bank, announces pre-tax profits of £11.9 billion for 2005, a record for the European banking industry. |