This website is a spatial analysis of the westward expansion
of the United States through time. We trace the the addition
of major land acquisitions and the admittance of new states to the union
from 1776 until present. At 1776 the United States only comprised
land east of the Appalachian mountains. The western border of United
States steadily progressed to the Pacific Ocean. Meanwhile, it also
stretched north and south in some areas, eventually taking its present
day shape. Our maps show the stages in which this change took place.
As well as land acquisition, we have included the formation of boundaries
within the nation as each state entered the union.