Twenty-three countries and many more territories make up the continent. It contains all the Central American and Caribbean countries. It shares borders with the Arctic Ocean, Atlantic Ocean, Caribbean Sea, Gulf of Mexico, and the Pacific Ocean.
History
Before the arrival of the European rulers in the native North America, the natives were divided into many tribal groups. Many indigenous cultures flourished, like the Dorset culture, followed by the Thule people and the Clovis culture of modern New Mexico. The Mound builders are the most recent people inhabiting the continent; they flourished from 300 BC to 150 AD.
With the arrival of the Europeans, the native population declined because of the diseases that the Europeans brought with them. Movements for independence started in the late eighteenth and early nineteenth centuries across the whole country. On July 4, 1776 the thirteen British colonies declared independence and the United States of America were formed.
Economy
As of 2010, services sector comprises 76.7% of the country's GDP, industry comprises 22.2% and agriculture comprises 1.2%. North America produces most of the world's corn, meat, cotton, soybeans, tobacco, and wheat, along with a variety of other food and industrial raw material crops.
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As of 2011, the United States is the most technologically developed economy in North America; it has an estimated per capita gross domestic product (PPP) of $47,200.








