In the 16th; century, Europeans began colonizing what is known today as The United States. America emerged from 13 British colonies along the East Coast. In 1775, the American Revolution began following disputes with Britain. On July 4th, 1776, the United States of America declared its independence and began to establish a constitution and expanded across North America during the 19th century. Soon, America made a name for itself as a free land, as well as a military, and global superpower. Today, the U.S. has the largest economy by nominal GDP and is the world’s foremost economic and military power. Mexico’s economy is a highly diversified, world leading, high-technology innovator, and the second-largest industrial output in the world.