About United States
The United States of America is a federal republic comprising 50 states that span the width of the North American continent, plus Alaska and Hawaii. It is a nation of staggering geographic diversity, housing almost every climate type on Earth—from the tropical wetlands of Florida and the arid deserts of Arizona to the temperate rainforests of Washington and the frozen tundra of Alaska. It famously features natural wonders like the Grand Canyon, Yellowstone, and Yosemite.
As a global superpower, the U.S. exerts immense influence on world culture, economy, and politics. New York City is a global hub of finance and culture; Los Angeles is the entertainment capital of the world; Washington D.C. is the seat of political power; and Silicon Valley drives global technology. The country is defined by its history of immigration, creating a "melting pot" of cultures, cuisines, and traditions.
The "American Dream"—the ethos that freedom includes the opportunity for prosperity and success—remains a central theme of its national identity. From jazz and rock 'n' roll to Hollywood movies and space exploration, American contributions to the modern world are ubiquitous. It is a land of road trips, national parks, sprawling metropolises, and small-town Americana.