Morse invents the telegraph. Victoria becomes Queen of Great Britain. Cherokee Indians were forcibly removed from their homeland in the Appalachian 1845 Ireland's potato famine starts. The Smithsonian institute is founded in Washington. The US acquires Texas.
Gold is discovered in California.
Florence Nightengale works as a nurse during the Crimean War. Henry David Thoreau dies. Russia captures Tashkent. American civil war ends. Ku Klux Klan forms in Tennessee.