1818 events in history

Jan 2 The British Institution of Civil Engineers is founded
Feb 5 Jean-Baptiste Bernadotte ascends to the thrones of Sweden and Norway
Feb 12 Bernardo O'Higgins formally approves the Chilean Declaration of Independence near Concepción, Chile
Mar 16 In the Second Battle of Cancha Rayada, Spanish forces defeated Chileans under José de San Martín
Apr 4 The United States Congress adopts the flag of the United States with 13 red and white stripes and one star for each state (then 20)
Apr 5 In the Battle of Maipú, Chile's independence movement – led by Bernardo O'Higgins and José de San Martín – win a decisive victory over Spain, leaving 2,000 Spaniards and 1,000 Chilean patriots dead
Apr 16 The United States Senate ratifies the Rush-Bagot Treaty, establishing the border with Canada
Apr 20 The case of Ashford v Thornton ends, with Abraham Thornton allowed to go free rather than face a retrial for murder, after his demand for trial by battle is upheld
Sep 7 Carl III of Sweden–Norway is crowned king of Norway, in Trondheim
Oct 20 The Convention of 1818 signed between the United States and the United Kingdom which, among other things, settles the Canada–United States border on the 49th parallel for most of its length
Dec 3 Illinois becomes the 21st U.S. state
Dec 24 The first performance of "Silent Night" takes place in the church of St. Nikolaus in Oberndorf, Austria