The 50 states that make up the United States of America are situated in Northern America, bordering both Canada and Mexico. Texas, Florida, and California are the three most significant states. With a total surface size of 3,796,742 square kilometers, the nation ranks fourth in the world's largest countries. Because of the country's enormous size and the variety of climate zones it encompasses, its climate varies tremendously. Mountains, grasslands, deep river valleys, and volcanoes define the topography. There are more than 332.4 million people living there. The nation's capital is Washington, D.C. New York City, with its 8.3 million residents, is the most populated city.Houston, Chicago, and Los Angeles are additional significant cities. With almost 110 million people annually, Hartsfield-Jackson Atlanta International Airport (ATL) is the busiest airport. Los Angeles International Airport (LAX), with 88 million passengers annually, is the second busiest. The busiest airport in the world, Atlanta International Airport (ATL) connects travelers to locations across the globe. A variety of languages and cultures from several immigration cycles have shaped American society. The vast majority of people identify as Christians. The English common law serves as the legal framework. A federal republic with a constitution governs the country. As the head of state and administration, Joe Biden represents the nation. There are elections every four years. The United States Dollar (USD) is the nation's official currency. With an open economy, the nation has the largest economy in the world, with a GDP of about $20.8 trillion. The per capita income of its people is $63,051. The two main industries that comprise the majority of the GDP are industry and services. Petroleum, steel, automobiles, aircraft, wheat, corn, fruits, and vegetables are its principal export commodities. The US leads the world in technical advancement and boasts an extremely diverse economy overall.
There are many different urban and outdoor tourist sites in the United States. Because of its diverse cultural background and beautiful surroundings, it is well-known worldwide. A few of the most popular locations are the Grand Canyon, Las Vegas, Washington, D.C., the Grand Canyon, Pike Place Market, Venice Beach, Mesa Verde, the Kenedy Space Center, and the River Walk in San Antonio. There are 24 UNESCO World Heritage Sites in the nation. An estimated 70 million tourists travel there each year, the bulk of which are from Mexico, Canada, and the United Kingdom. The third-most visited country worldwide is the United States of America.