February 18

1229 – The Sixth Crusade: Frederick II, Holy Roman Emperor, signs a ten-year truce with al-Kamil, regaining Jerusalem, Nazareth, and Bethlehem with neither military engagements nor support from the papacy. 1268 – The Battle of Wesenberg is fought between the Livonian Order and Dovmont of Pskov. 1332 – Amda Seyon I, Emperor of Ethiopia begins his campaigns in the southern Muslim provinces. 1478 – George, Duke of Clarence, convicted of treason against his older brother Edward IV of England, is executed in private at the Tower of London. 1637 – Eighty Years' War: Off the coast of Cornwall, England, a Spanish fleet intercepts an important Anglo-Dutch merchant convoy of 44 vessels escorted by six warships, destroying or capturing 20 of them. 1735 – The ballad opera called Flora, or Hob in the Well went down in history as the first opera of any kind to be produced in North America (Charleston, S.C.) 1781 – Fourth Anglo-Dutch War: Captain Thomas Shirley opens his expedition against Dutch colonial outposts on the Gold Coast of Africa (present-day Ghana). 1791 – Congress passes a law admitting the state of Vermont to the Union, effective 4 March, after that state had existed for 14 years as a de facto independent largely unrecognized state. 1797 – French Revolutionary Wars: Sir Ralph Abercromby and a fleet of 18 British warships invade Trinidad. 1814 – Napoleonic Wars: The Battle of Montereau. 1861 – In Montgomery, Alabama, Jefferson Davis is inaugurated as the provisional President of the Confederate States of America. 1861 – With Italian unification almost complete, Victor Emmanuel II of Piedmont, Savoy and Sardinia assumes the title of King of Italy. 1873 – Bulgarian revolutionary leader Vasil Levski is executed by hanging in Sofia by the Ottoman authorities. 1878 – John Tunstall is murdered by outlaw Jesse Evans, sparking the Lincoln County War in Lincoln County, New Mexico. 1885 – Adventures of Huckleberry Finn by Mark Twain is published in the United States.