1847 through 1860
1829-1851 2nd Cholera pandemic
1830-1860 Underground railroad leads 100,000+ slaves to freedom in US
1837-1901 Reign of Queen Victoria (Hanover)
1845-1848 James K Polk president of US
1845-1849 Irish Potato Famine
1846-1848 The Mexican-US War
1848 NY allows women to own real estate
1848 Oregon organized as a territory
1848 Wisconsin enters the union - 30th
1848-1856 1st gold rush in California -- Sutters Mill
1849-1852 Zachary Taylor president of the US
1849 Fizeau measures speed of light
1850 Utah (included Nevada) organized as a territory
1850 US pop reaches 23 million
1850 California enters the union - 31st
1850 New Mexico organized as a territory
1850 World pop. est. at 1.1 billion
1850 W. H. F. Talbot develops idea of halftone printing
1851 Gold rush in Australia
1852-1859 3rd Cholera pandemic
1853-1856 Franklin Pierce president of US
1853 Washington (included pt. of Idaho) organized as a territory
1854-1856 Crimean War
1854 Nebraska organized as a territory
1854 Kansas organized as a territory
1856 Celluloid, the first thermoplastic
1857-1860 James Buchanan president of US
1857-1866 Transatlantic cable laid
1857 Dred Scott decision: Blacks could not be US citizens
1858 Minnesota enters the union - 32nd
1858 India bill transfers government of India to England
1859 Darwin pub. Origin Of Species
1859 Oil Well
1859 Oregon enters the union - 33rd
1860 South Carolina Secedes from the Union
1860 Rifled barrel invented
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