The most popular city for tourists in the united states is los angeles chicago orlando new york city

The most popular city for tourists in the United States is New York City.

Explanation:

New York is the largest city in the United States of America. Thanks to its leading and influential role in trade, finance, media, public relations, art, fashion and education, it is considered one of the most important world cities.  

The New York conurbation is one of the largest urban areas in the world. The city is the most populous big city in the United States with more than 9.5 million inhabitants spread over an area of 789.43 km². The city of New York consists of five boroughs: The Bronx, Brooklyn, Manhattan, Queens and Staten Island. Many monuments and neighborhoods of the city are world famous and often symbolize the United States in general. There are the Statue of Liberty, Wall Street, skyscrapers such as the Empire State Building and the Chrysler Building, as well as the Ground Zero, where the Twin Towers were located and its successor, the One World Trade Center, was opened in 2014.  

doctrine that the us had the right to expand throughout north america.