1843 events in history

Feb 6 The first minstrel show in the United States, The Virginia Minstrels, opens (Bowery Amphitheatre in New York City)
Feb 11 Giuseppe Verdi's opera I Lombardi alla prima crociata receives its first performance in Milan, Italy
Feb 25 Provisional Cession of the Hawaiian or Sandwich Islands established by Lord George Paulet
May 16 The first major wagon train heading for the Pacific Northwest sets out on the Oregon Trail with one thousand pioneers from Elm Grove, Missouri
May 18 The Disruption in Edinburgh of the Free Church of Scotland from the Church of Scotland
Jun 17 The Wairau Affray, the first serious clash of arms between Māori and British settlers in the New Zealand Wars, takes place
Jun 26 Treaty of Nanking comes into effect, Hong Kong Island is ceded to the British "in perpetuity"
Jul 19 Brunel's steamship the SS Great Britain is launched, becoming the first ocean-going craft with an iron hull or screw propeller and becoming the largest vessel afloat in the world
Aug 15 Tivoli Gardens, one of the oldest still intact amusement parks in the world, opens in Copenhagen, Denmark
Aug 15 The Cathedral of Our Lady of Peace in Honolulu, Hawaii is dedicated. Now the cathedral of the Roman Catholic Diocese of Honolulu, it is the oldest Roman Catholic cathedral in continuous use in the United States
Sep 3 King Otto of Greece is forced to grant a constitution following an uprising in Athens
Sep 13 The Greek Army rebels (OS date: September 3) against the autocratic rule of king Otto of Greece, demanding the granting of a constitution
Sep 21 John Williams Wilson takes possession of the Strait of Magellan on behalf of the newly independent Chilean government
Oct 1 The News of the World tabloid begins publication in London
Oct 13 In New York City, Henry Jones and 11 others found B'nai B'rith (the oldest Jewish service organization in the world)
Oct 14 The British arrest the Irish nationalist Daniel O'Connell for conspiracy to commit crimes
Oct 16 Sir William Rowan Hamilton comes up with the idea of quaternions, a non-commutative extension of complex numbers
Nov 28 Ka Lā Hui (Hawaiian Independence Day): The Kingdom of Hawaii is officially recognized by the United Kingdom and France as an independent nation