Peak level. The Millennium in America was in 2000. At that time, the GDP created reached $65,438 +00.2 trillion, and it has developed into a superpower, far ahead, belonging to the peak level of the United States. The full name of the United States is the United States of America, which is located in central North America, bordering Canada in the north, Mexico in the south, the Pacific Ocean in the west and the Atlantic Ocean in the east. The United States is a highly developed modern country with the largest gross domestic product and the most developed modern market economy in the world.