Historical Dictionary of the United States

The evolution of the United States from a late-18th century coalition of rebel British colonies to a 21st century global superpower was shaped by several forces. As the nation expanded its boundaries after the Treaty of Paris confirmed independence from Great Britain in 1783, it acquired a rich variety of resources – coal, fertile soils, forests, iron ore, oil, precious metals, space, and varied climates as well as extensive tracts of territory. Technological innovations, such as the cotton gin