Editing 1804 (section)

=== October–December ===
* [[October 5]] – [[Action of 5 October 1804]]: War between Spain and the United Kingdom is triggered by the battle between four British warships (''Indefatigable'', ''Medusa'', ''Amphion'' and ''Lively'') and four Spanish frigates (''Medee'', ''Fama'', ''Clara'' and ''Mercedes''), all carrying treasure and merchandise.  Captain Graham Moore of ''Indefatigable'' informs Spanish Admiral Jose Bustamante of his orders to detain the treasure-laden ships and, "not receiving a satisfactory answer, an Action commenced";<ref>Nicholas Harris Nicolas, ''The Dispatches and Letters of Vice Admiral Lord Viscount Nelson'' (Cambridge University Press, 1846; reprinted 2011) p266</ref> ''La Mercedes'' is sunk and the other three ships surrender.
* [[October 8]] – [[Jean-Jacques Dessalines]] holds his coronation as Jean-Jacques I, Emperor of [[Haiti]].<ref>John Relly Beard, ''The Life of Toussaint L'Ouverture, the Negro Patriot of Hayti'' (James Redpath Co., 1863, reprinted by University of North Carolina Press, 2012) p271</ref>
* [[November 3]] – The [[Treaty of St. Louis (1804)|Treaty of St. Louis]] is signed by [[Quashquame]] and [[William Henry Harrison]]; controversy surrounding the treaty eventually causes the [[Sauk people]] to ally with the British during the [[War of 1812]], and is the main cause of the [[Black Hawk War]] of 1832.
* [[November 20]] – [[Said bin Sultan, Sultan of Muscat and Oman]], starts to rule.
* [[November 30]] – The [[Democratic-Republican Party|Democratic-Republican]]-controlled [[United States Senate]] begins [[Impeachment of Samuel Chase|an impeachment trial]] against [[Federalist Party|Federalist]]-partisan [[Supreme Court of the United States]] Justice [[Samuel Chase]], on charges of political bias (he is acquitted by the [[United States Senate]] of all charges on March 1, 1805).
* [[December 2]] – [[Coronation of Napoleon I]]: At the cathedral of [[Notre Dame de Paris]], [[Napoleon]] crowns himself as the first [[Emperor of the French]] in a thousand years. Witnessing this, [[Simón Bolívar]] dedicates himself to liberating [[Venezuela]] from Spanish rule.
* [[December 3]] – [[Thomas Jefferson]] defeats [[Charles C. Pinckney]] in the [[1804 United States presidential election|United States presidential election]].
* [[December 12]] – Spain declares war on the United Kingdom.