Decades: 1790s 1800s 1810s 1820s 1830s - 1840s - 1850s 1860s 1870s 1880s 1890s
Years: 1840 1841 1842 1843 1844 - 1845 - 1846 1847 1848 1849 1850
Beginning of the Irish potato famine.
James Knox Polk succeeds John Tyler as President of the United States of America
January 29 - The Raven by Edgar Allan Poe is published for the first time (New York Evening Mirror).
March 1 - President John Tyler signs a bill authorizing the United States to annex the Republic of Texas.
March 3 - Florida is admitted as the 27th U.S. state.
March 3 - For the first time the United States Congress passes legislation overriding a presidential veto.
March 11 - First Maori War: Chiefs Kawiti and Hone-Heke leads 700 Maoris in the burning of the white settlement of Kororareka, now known as Russel.
May 20 - The HMS Erebus and Terror with 134 men under John Franklin sail from the River Thames beginning a disastrous expedition to find the Northwest Passage.
July 4 - Near Concord, Massachusetts, Henry David Thoreau embarks on a two-year experiment in simple living at Walden Pond (see Walden).
August 28 - Scientific American begins publication
October 10 - In Annapolis, Maryland, the Naval School (later renamed the United States Naval Academy) opens with 50 midshipmen students and seven professors.
October 13 - A majority of voters in the Republic of Texas approve a proposed constitution, that if accepted by the United States Congress, will make Texas a U.S. state.
December 2 - Manifest Destiny: US President James Polk announces to Congress that the Monroe Doctrine should be strictly enforced and that the United States should aggressively expand into the West.
December 27 - Anesthesia is used for childbirth for the first time (Dr. Crawford Williamson Long in Jefferson, Georgia).
December 29 - Texas is admitted as the 28th U.S. state.
Second separation of Republic of Yucatan from Mexico
Year in topic
1845 in literature
The Count of Monte Cristo - Alexandre Dumas, pčre
1845 in music
1845 in sports
March 3 - Georg Cantor, German mathematician (+ 1918)
March 10 - Emperor Alexander III of Russia
March 27 - Wilhelm Conrad Röntgen, physicist, winner of the first Nobel Prize in physics 1901 (+ 1923)
May 12 - Gabriel Fauré, composer (+ 1924)
May 17 - Jacint Verdaguer, Catalan poet
May 30 - King Amadeus I of Spain
July 19 - Horatio Nelson Young, American naval hero (+ 1913)
August 25 - King Ludwig II of Bavaria (+ 1886)
November 10 - John Sparrow David Thompson, Canadian prime minister.
May 12 - Janos Bacsanyi, Hungarian poet
June 8 - Andrew Jackson, 7th president of the United States of America
Heads of state in 1845
1845 is also the name of a song on One Minute Silence' album Buy Now... Saved Later.\n