The United States of America land borders with Canada and with Mexico. 1776 was the year of the declarance of its foundation.
Today USA is a country full of contrasts either geographically due to its immense size and also due to its social-economical differences well noticed mostly between big cities vs. countryside and Caucasian Americans vs. African Asian vs. Latin American and American Indians ethnic groups living in the country.
The economy of the United States is organized primarily on a capitalist model and its one of the world top economies.