Final answer:
The causes of westward expansion in the United States were demographic growth, economic motivations, and political concerns about foreign claim to western lands. The effects included altering U.S. foreign policy, impacting diverse ethnic groups profoundly, and contributing to tensions leading to the Civil War. The federal government's policies, like the Homestead Act, were instrumental in promoting this expansion.
Step-by-step explanation:
Causes of Westward Expansion
The United States experienced significant growth from 1800-1850, with the population increasing from about five million to over twenty million. This demographic surge, coupled with declining soil fertility in Eastern farms, prompted many to seek land in the West. Economic motivations also played a major role as Eastern merchants desired control of West coast ports to facilitate trade with Asia. Politically, there was a fear that if the U.S. did not claim the West, other powers such as Britain might, and westward expansion was seen as a way to maintain the republic's agrarian roots reminiscent of Jefferson's yeoman farmer ideals.
Effects of Westward Expansion on the U.S.
Westward expansion deeply influenced the nation's foreign policy, particularly with tensions between the U.S. and Mexico over American immigration into Texas. The quest for new land also affected various groups differently; while it meant opportunity for some, for others, notably Native Americans, it resulted in dispossession and cultural upheaval. The expansion also prompted the spread of slavery into new territories, contributing to the sectional tensions that led to the Civil War.
Government's Role in Promoting Westward Expansion
The federal government actively encouraged the westward movement, even during the Civil War, through measures such as the Homestead Act of 1862, which offered free land to settlers willing to cultivate it. This policy aimed to sustain Union support and bolster the economy during the war by providing opportunities for prosperity through land ownership.
The Realities of Homesteading
The life of an American farmer carving out a homestead in the Midwest was fraught with challenges. While these settlers did not face traditional urban issues, they dealt with hardships such as isolation, extreme weather conditions, and the difficulty of turning the untamed land into productive farms against a backdrop of limited resources and support.
Legacy of Westward Expansion
The legacy of westward expansion includes both the triumph of American growth and the darker aspects of displacement and exploitation. Turner's frontier thesis postulates that the frontier shaped the American character and democracy by constantly providing a safety valve for economic distress through available land. However, as land became scarcer, this tension escalated, affecting society and politics within the growing nation.