1842 through 1854
1829-1851 2nd Cholera pandemic
1830-1860 Underground railroad leads 100,000+ slaves to freedom in US
1835-1842 2nd Seminole War
1837-1901 Reign of Queen Victoria (Hanover)
1839-1842 Opium war between China and the English
1841-1844 John Tyler president of US
1842 Chinese cede Hong Kong to the English
1844 1st telegraph line message, Washington to New York
1845 Texas enters the union - 28th
1845-1848 James K Polk president of US
1845 Florida enters the union - 27th
1845-1849 Irish Potato Famine
1846 Iowa enters the union - 29th
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
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