1) The American geography is an impressive one.

The Greater Mississippi Basin together with the Intracoastal Waterway has more kilometers of navigable internal waterways than the rest of the world combined.

The American Midwest is both overlaid by this waterway and is the world's largest contiguous piece of farmland.

The U.S. Atlantic Coast possesses more major ports than the rest of the Western Hemisphere combined. 

2) The economic history of the United States has its roots in European settlements in the 16th, 17th, and 18th centuries.

The American colonies went from colonial economies to a small, independent farming economy, which in 1776 became the United States of America. In two centuries, the United States grew to a huge, integrated, industrialized economy.

The main causes were a large unified market, a supportive political and legal system, vast areas of highly productive farmlands, vast natural resources, a cultural landscape that valued entrepreneurship, a commitment to investing in material and human capital, and at times a willingness to exploit labor.

The economy has maintained high wages, attracting immigrants from all over the world. The number of workers and, more importantly, their productivity help determine the health of the U.S. economy