|Covid-19|President: James Monroe (DR-Virginia) (until March 4), John Quincy Adams (DR/NR-Massachusetts) (starting March 4)
Vice President: Daniel D. Tompkins (DR-New York) (until March 4), John C. Calhoun (D-South Carolina) (starting March 4)
Chief Justice: John Marshall (Virginia)
Speaker of the House of Representatives: Henry Clay (DR-Kentucky) (until March 4), John W. Taylor (DR-New York) (starting December 5)
Congress: 18th (until March 4), 19th (starting March 4)
January 10 – Indianapolis becomes the capital of Indiana (moved from Corydon, Indiana).
February 9 – After no presidential candidate received a majority of electoral votes, the United States House of Representatives elects John Quincy Adams President of the United States.
February 12 – Treaty of Indian Springs: The Lower Creek Council, led by William McIntosh, cedes a large amount of Creek territory in Georgia to the United States government.
March 4 – John Quincy Adams officially succeeds James Monroe as President of the United States.
April 30 – Upper Creek chief Menawa leads an attack that assassinates William McIntosh for signing the Treaty of Indian Springs.
May 11 – American Tract Society is founded.
June 3 – Kansa Nation cedes its territory to the United States (see History of Kansas).
June 11 – The first cornerstone is laid for Fort Hamilton in New York City.
July 14 – The Jefferson Literary and Debating Society is founded by 16 disgruntled members of the now-defunct Patrick Henry Society in Room 7, West Lawn, of the University of Virginia.
August 19 – First Treaty of Prairie du Chien at Fort Crawford, Prairie du Chien, Wisconsin
October 26 – The Erie Canal opens, granting passage from Albany, New York to Lake Erie.
November 7 – Treaty of St. Louis: 1,400 Missouri Shawnees were forcibly relocated from Missouri to Kansas. (See History of Kansas)
November 12 – New Echota designated capital of the Cherokee Nation.
November 26 – At Union College in Schenectady, New York a group of college students form Kappa Alpha Society as the first college social fraternity (it was the first to combine aspects of secret Greek-letter societies, literary societies and formalized student social groups).
The Cherokee Nation officially adopts Sequoyah's syllabary.
Vancouver, Washington is established by Dr. John McLoughlin on behalf of the Hudson's Bay Company.
Ypsilanti, Michigan is established.
Vicksburg, Mississippi is incorporated.
New Harmony, Indiana established as a social experiment, built by the Harmony Society and sold to Robert Owen.
The United States Postal Service starts a dead letter office.
Centenary College of Louisiana is founded in Jackson, Louisiana. The campus later moved to Shreveport, Louisiana.
Era of Good Feelings (1817–1825)
April 7 – John H. Gear, United States Senator from Iowa from 1895 till 1900. (died 1900)
April 17 – Jerome B. Chaffee, United States Senator from Colorado from 1876 till 1879. (died 1886)
June 1 – John Hunt Morgan, Confederate general in the American Civil War (died 1864)
July 15 – Joseph Carter Abbott, United States Senator from North Carolina from 1868 till 1871. (died 1881)
August 10 – Edmund Spangler, carpenter and stagehand who was employed at Ford's Theatre at the time of President Abraham Lincoln's murder (died 1875)
November 9 – A. P. Hill, Confederate general killed in the American Civil War (died 1865)
December 18 – John S. Harris, United States Senator from Louisiana from 1868 till 1871. (died 1906)
December 30 – Newton Booth, United States Senator from California from 1875 till 1881. (died 1892)
January 8 – Eli Whitney, Inventor of the cotton gin and milling machine.
June 1 – Daniel Tompkins, sixth Vice President of the United States from 1817 to 1825 (born 1774)
1825 in the United States Wikipedia
The following are events from the year 1825 in the United States.