States are part of countries, and countries may be grouped by other areas, like continents, hemispheres, or a political or economic body. The US is also commonly referred to in three distinct ways: as ...

Some blacks, however, were living free. The census of 1790 revealed that 59,000 free blacks lived in the United States -- approximately 27,000 in the North and 32,000 in the South. By 1830 ...