Animated mapsHistorical MapsWorld Slaves as percentage of population (1790 – 1860) December 1, 2015 Alex Related Posts:When each U.S. states population exceeded 1 million…The U.S. largest citiesPercent of population with a disability by U.S. countyPercentage of Blacks in America'sSlavery in the United States: A Comprehensive OverviewU.S. Population Density MappedU.S. population density (1790 - 1860)US Population Growth Mapped