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1855 in the United States
Centuries:	18th century – 19th century – 20th century
Decades:	1830s 1840s – 1850s – 1860s 1870s
Years:	1852 1853 1854 – 1855 – 1856 1857 1858
Flag:	31 stars; (1851 – 1858)

Events from the year 1855 in the United States.

[edit] Events

January 23 – The first bridge over the Mississippi River opens in what is now Minneapolis, Minnesota (a crossing made today by the Father Louis Hennepin Bridge).
January 26 – The Point No Point Treaty is signed in the Washington Territory.
February 12 – Michigan State University (the "pioneer" land-grant college) is established.
February 22 – Pennsylvania State University is founded as the Farmers' High School of Pennsylvania.
March 3 – The U.S. Congress appropriates $30,000 to create the U.S. Camel Corps.
March 16 – Bates College is founded by abolitionists in Lewiston, Maine.
March 30 – Elections are held for the first Kansas Territory legislature. Missourians cross the border in large numbers to elect a pro-slavery body.
May 17 – The Mount Sinai Hospital is dedicated (as the Jews' Hospital) in New York City; it opens to patients on June 5.
June 28 – The Sigma Chi Fraternity is founded at Miami University in Oxford, Ohio.
July 1 – Quinault Treaty signed, Quinault and Quileute cede their land to the United States.
July 2 – The Kansas territorial legislature convenes in Pawnee and begins passing proslavery laws.
November 21 – Large-scale Bleeding Kansas violence begins with events leading to the Wakarusa War between antislavery and proslavery forces.