- Jan 6 Indiana state legislature approves development of the future capital city of Indianapolis
Mexico Grants Austin Settlement
Jan 17 Mexico permits Moses Austin and 300 US families to settle in Texas. After his death his son Stephen leads a colony to Texas.
Plan of Iguala
Feb 24 Agustín de Iturbide and Vicente Guerrero agree to the Plan of Iguala. States Mexico will become a constitutional monarchy, Roman Catholicism the official religion and that Peninsulares and Creoles will enjoy equal political and social rights.
- Mar 3 American tailor and inventor Thomas L. Jennings (30) receives US patent for his "dry-scouring" process. the forerunner of today’s modern dry-cleaning
- Mar 5 Monroe is 1st US President inaugurated on March 5th, because 4th was Sunday
- Mar 14 African Methodist Episcopal Zion Church founded (NY)
- Mar 21 First revolutionary act in Monastery of Agia Lavra, Kalavryta, Greek War of Independence.
- Mar 21 Merger of the Hudson Bay Company and the North West Company, creating a monopoly of the fur trade in British North America [1]
- Mar 23 Battle and fall of city of Kalamata, Greek War of Independence
- Mar 25 The Greek revolution against the Ottoman Turks is officially declared, with hostilities having started two months earlier
- Mar 26 Franz Grillparzer's "Das Goldene Vliess" premieres in Vienna
- Apr 10 Patriarch Gregory V of Constantinople is hanged by the Turks from the main gate of the Patriarchate, his body thrown into the Bosphorus
- May 8 Greek War of Independence: Greeks defeat the Turks in Gravia
- May 12 The first major battle of the Greek War of Independence against the Turks occurs in Valtetsi
- May 30 James Boyd patents Rubber Fire Hose
- May 31 Cathedral of Assumption of Blessed Virgin Mary, 1st US Catholic cathedral, is dedicated in Baltimore, designed by Benjamin Henry Latrobe
- Jun 14 King of Sennar, Badi VII surrenders his throne and realm to general Ismail Pasha of the Ottoman Empire, bringing the 300 year old Sudanese kingdom to an end
Der Freischutz
Jun 18 Carl Maria von Weber's opera "Der Freischutz" ("The Marksman") premieres at Schauspielhaus, Berlin, Germany
- Jun 19 Decisive defeat of the Greek revolutionary society Philikí Etaireía by the Ottomans at Drăgăşani (in Wallachia)
- Jun 21 African Methodist Episcopal Zion (AMEZ) Church organizes (NYC)
- Jun 23 Dutch troops conquer Palembang
- Jun 24 Battle of Carabobo; Bolívar defeats royalists outside Caracas
- Jun 25 Carl Maria von Weber's "Konzertstück in f, for Piano and Orchestra" premieres
- Jul 28 Peru declares independence from Spain (National Day)
- Aug 4 1st edition of American magazine "The Saturday Evening Post"
Russian Antarctic Expedition
Aug 4 Russian Antarctic expedition led by Fabian Gottlieb von Bellingshausen returns to Kronshtadt after becoming the 1st to circumnavigate Antarctica
Louis XVIII Coup Fails
Aug 19 Failed liberal coup against French King Louis XVIII
Execution of José Miguel Carrera
Sep 4 Chilean independence figure José Miguel Carrera shot and killed after a show trial in Mendoza, Argentina
- Sep 15 Act of Independence of Central America: Costa Rica, El Salvador, Guatemala, Honduras & Nicaragua declare their independence from the Spanish Empire
- Sep 23 Fall of Tripolitsa, Greek forces massacre 30,000 Turks during Greek War of Independence
- Sep 27 Mexican revolutionary forces led by Agustín de Iturbide occupy Mexico City as Spanish withdraw, bringing an end to the Mexican War of Independence
Peruvian Navy Founded
Oct 8 The government of General José de San Martín establishes the Peruvian Navy
Rossini Moves to Bolongna
Dec 28 Italian opera composer Gioachino Rossini moves to Bologna, Papal States