1806

Events from the year **1806 in the United States**.

Governors
* Governor of Connecticut: Jonathan Trumbull, Jr. (Federalist)
* Governor of Delaware: Nathaniel Mitchell (Federalist)
* Governor of Georgia: John Milledge (Democratic-Republican) (until September 23), Jared Irwin (Democratic-Republican) (starting September 23)
* Governor of Kentucky: Christopher Greenup (Democratic-Republican)
* Governor of Maryland:
	+ until November 10: Robert Bowie (Democratic-Republican)
	+ November 10-November 12: vacant
	+ starting November 12: Robert Wright (Democratic-Republican)
* Governor of Massachusetts: Caleb Strong (Federalist)
* Governor of New Hampshire: John Langdon (Democratic-Republican)
* Governor of New Jersey: Joseph Bloomfield (Democratic-Republican)
* Governor of New York: Morgan Lewis (Democratic-Republican)
* Governor of North Carolina: Nathaniel Alexander (Democratic-Republican)
* Governor of Ohio: Edward Tiffin (Democratic-Republican)
* Governor of Pennsylvania: Thomas McKean (Democratic-Republican)
* Governor of Rhode Island: Henry Smith (Country) (until May 7), Isaac Wilbour (Country) (starting May 7)
* Governor of South Carolina: Paul Hamilton (Democratic-Republican) (until December 9), Charles Pinckney (Democratic-Republican) (starting December 9)
* Governor of Tennessee: John Sevier (Democratic-Republican)
* Governor of Vermont: Isaac Tichenor (Federalist)
* Governor of Virginia: William H. Cabell (Democratic-Republican)

Lieutenant Governors
* Lieutenant Governor of Connecticut: John Treadwell (Federalist)
* Lieutenant Governor of Kentucky: vacant (until month and day unknown), Thomas Posey (political party unknown) (starting month and day unknown)
* Lieutenant Governor of Massachusetts: Edward Robbins (political party unknown) (until month and day unknown), vacant (starting month and day unknown)
* Lieutenant Governor of New York: John Broome (Democratic-Republican)
* Lieutenant Governor of Rhode Island: vacant (until May 7), Isaac Wilbour (Democratic-Republican) (starting May 7)
* Lieutenant Governor of South Carolina: Thomas Sumter, Jr. (Democratic-Republican) (until December 9), John Hopkins (Democratic-Republican) (starting December 9)
* Lieutenant Governor of Vermont: Paul Brigham (Democratic-Republican)

## Events

* March 23 – The Lewis and Clark Expedition and their Corps of Discovery, having reached the Pacific Ocean after traveling through the Louisiana Purchase, begins its journey home.
* March 28 – Washington College (modern-day Washington & Jefferson College) is chartered by the Pennsylvania General Assembly.
* March 29 – Construction is authorized of the *National Road* (the first United States federal highway).
* April 18 – The U.S. Congress passes the Non-importation Act in an attempt to coerce Great Britain to suspend its impressment of American sailors and to respect American sovereignty and neutrality on the high seas.
* May 30 – Future President Andrew Jackson fights his second duel, killing Charles Dickinson who had accused Jackson's wife of bigamy; Jackson has a bullet lodged close to his heart.
* July 4 – Ship *The Irish Rover* sets sail from the Cove of Cork, Ireland for New York.
* July 7 – Cornerstone laid for America's First Cathedral, now known as the Baltimore Basilica. Architect: Benjamin Latrobe.
* July 15 – Pike Expedition: Near St. Louis, Missouri, United States Army Lieutenant Zebulon Pike leads an expedition from Fort Bellefontaine to explore the west.
* August 14 – The Lewis and Clark Expedition makes its return to the Mandan Indians while making its return trip to St. Louis.
* September 23 – The Lewis and Clark Expedition reaches St. Louis, Missouri, ending a successful exploration of the Louisiana Territory and the Pacific Northwest.
* November 15 – Pike Expedition: During his second exploratory expedition, Lieutenant Zebulon Pike sees a distant mountain peak while near the Colorado foothills of the Rocky Mountains which is later named Pikes Peak in his honor.

## Memoriam

* February 20 – Lachlan McIntosh, military and political leader (aged 80; Savannah, GA, USA)
* April 10 – Horatio Gates, British soldier who served as an American general in the American Revolutionary War (aged 78; New York City, NY, USA)
* May 30 – Charles Dickinson, attorney that Andrew Jackson killed (in a duel) after Dickinson accused Jackson's wife of bigamy (aged 25; Logan County, KY, USA)
* October 9 – Benjamin Banneker, astronomer, surveyor (aged 74; Baltimore County, MD, USA)
* October 25 – Henry Knox, 1st United States Secretary of War, military officer of the Continental Army and later the United States Army (aged 56; Thomaston, MA (Now ME), USA)