Economic history of the United States

The economic history of the United States has its roots in European settlements in the 16th, 17th, and 18th centuries. The American colonies progressed from marginally successful colonial economies to a small, independent farming economy, which in 1776 became the United States of America. In 230 years the United States grew to a huge, integrated, industrialized economy that makes up over a fifth of the world economy. The main causes were a large unified market, a supportive political-legal system, vast areas of highly productive farmlands, vast natural resources (especially timber, coal and oil), and an entrepreneurial spirit and commitment to investing in material and human capital. The economy has maintained high wages, attracting immigrants by the millions from all over the world.