1830-1860 Underground railroad leads 100,000+ slaves to freedom in US 1837-1901 Reign of Queen Victoria (Hanover) 1848-1856 1st gold rush in California -- Sutters Mill 1849-1852 Zachary Taylor president of the US 1852-1859 3rd Cholera pandemic 1853-1856 Franklin Pierce president of US 1853 Washington (included pt. of Idaho) organized as a territory