electing John Rutledge as the state's first president. In February 1778, South Carolina became the first state to ratify the Articles of Confederation, the initial governing document of the United States, and in May 1788, South Carolina ratified the United States Constitution, becoming the eighth state to enter the union. During the American Revolutionary War (1775–1783), about a third of combat action took place in South Carolina, more than any other state. Inhabitants of the state endured being invaded by British forces and an ongoing civil war between loyalists and partisans that devastated the backcountry. It is estimated 25,000 slaves (30% of those in South Carolina) fled, migrated or died during the war. Antebellum America's first census in 1790 put the state's population at nearly 250,000. By the 1800 census, the population had increased 38 per cent to nearly 340,000 of which 146,000 were slaves. At that time South Carolina had the largest population of Jews in the sixteen states of the United States, mostly based in Savannah and Charleston, the latter being the country's fifth largest city. In the Antebellum period (before the Civil War) the state's economy and population grew. Cotton became an important crop after the invention of the cotton gin. While nominally democratic, from 1790 until 1865, wealthy male landowners were in control of South Carolina. For example, a man was not eligible to sit in the State House of Representatives unless he possessed an estate of 500 acres of land and 10 Negroes, or at least 150 pounds sterling. Columbia, the new state capital was founded in the center of the state, and the State Legislature first met there in 1790. The town grew after it was connected to Charleston by the Santee Canal in 1800, one of the first canals in the United States. As dissatisfaction of the planters ruling class with the federal government grew, in the 1820s John C. Calhoun became a leading proponent of states' rights, limited government, nullification of the U.S. Constitution, and free trade. In 1832, the Ordinance of Nullification declared federal tariff laws unconstitutional and not to be enforced in the state, leading to the Nullification Crisis. The federal Force Bill was enacted to use whatever military force necessary to enforce federal law in the state, bringing South Carolina back into line. In the United States presidential election of 1860, voting was sharply divided, with the south voting