By 1840, the Georgetown District (later County) produced nearly one-half of the total rice crop of the United States. It became the largest rice-exporting port in the world. Wealth from the rice created an elite European-American planter class; they built stately plantation manor houses and often also had townhouses in the city, bought elegant furniture and other furnishings, and extended generous hospitality to others of their class. Their relatively leisured lifestyle for a select few, built on the labor of thousands of slaves, wasd disrupted by the Civil War. Afterward the abolition of slavery and transformation to a free labor market in the South so changed the economics of rice production as to make the labor-intensive process unprofitable. The soft silt soil of the South Carolina low country required harvesting rice by hand. In addition, the disruption and destruction of the war delayed the resumption of agriculture in the South. Nationally, the economy struggled in the 1870s, adding to pressures on agriculture.