was home to seven of the nation's thirty largest cities. During this period, towns established academies for education, including for girls. The western area of the state was a center of progressive causes, including support of abolitionism, temperance, and women's rights. Religious enthusiasms flourished and the Latter Day Saint movement was founded in the area by Joseph Smith and his vision. Some supporters of abolition participated in the Underground Railroad, helping fugitive slaves reach freedom in Canada or in New York. In addition, in the early 1840s the state legislature and Governor William H. Seward expanded rights for free blacks and fugitive slaves in New York: in 1840 the legislature passed laws protecting the rights of African Americans against Southern slave-catchers. One guaranteed alleged fugitive slaves the right of a jury trial in New York to establish whether they were slaves, and another pledged the aid of the state to recover free blacks kidnapped into slavery, (as happened to Solomon Northup of Saratoga Springs in 1841, who did not regain freedom until 1853.) In 1841 Seward signed legislation to repeal a "nine-month law" that allowed slaveholders to bring their slaves into the state for a period of nine months before they were considered free. After this, slaves brought to the state were immediately considered freed, as was the case in some other free states. Seward also signed legislation to establish public education for all children, leaving it up to local jurisdictions as to how that would be supplied (some had segregated schools). New York culture bloomed in the first half of the 19th century: in 1809 Washington Irving wrote the satirical A History of New York under the pen name Diedrich Knickerbocker, and in 1819 he based Rip Van Winkle and The Legend of Sleepy Hollow in Hudson Valley towns. Thomas Cole's Hudson River School was established in the 1830s by showcasing dramatic landscapes of the Hudson Valley. The first baseball teams formed in New York City in the 1840s, including the New York Knickerbockers. Professional baseball later located its Hall of Fame in Cooperstown. Saratoga Race Course, an annual summer attraction in Saratoga Springs, opened in 1847. New York in the American Civil War A civil war was not in the best interest of business, because New York had strong ties to the Deep South, both through the port of New York and manufacture of cotton goods in upstate