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United States of America

The land of opportunity — Your complete guide to immigration, education, careers, healthcare, and life in the world's largest economy.

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Capital
Washington D.C.
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Population
331 Million
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GDP
$25.5 Trillion
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Currency
US Dollar ($)
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Language
English
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Continent
North America
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Dialing Code
+1
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Time Zones
6 (EST to HST)

📚 Explore All USA Topics

Click any topic below to read our in-depth guide with thousands of words of detailed, researched information:

✈️ Visa & Immigration

H1B, Green Card, F1, B1/B2, DV Lottery, EB categories, OPT, STEM extension — complete guide to every US visa type with requirements, costs, and processing times.

🎓 Education System

Top 50 universities, Ivy League, community colleges, SAT/GRE/TOEFL, scholarships, admission process, tuition fees, and student life.

💼 Economy & Jobs

GDP breakdown, top industries, salary data by profession, job search portals, resume tips, interview prep, and work culture.

🏥 Healthcare

Medicare, Medicaid, ACA/Obamacare, health insurance plans, hospital systems, prescription drugs, emergency services.

🏠 Cost of Living

City-by-city comparison: rent, groceries, utilities, transportation, childcare. NYC vs LA vs Austin vs Miami vs Chicago.

🗺️ Travel Guide

Top 50 destinations, national parks, road trip routes, tourist visa requirements, hotels, budget tips, safety information.

🏛️ Culture & History

Independence, Civil Rights, American Dream, Hollywood, music, sports (NFL/NBA/MLB), festivals, food culture, etiquette.

🏙️ Major Cities

Top 20 cities: New York, Los Angeles, San Francisco, Chicago, Houston, Miami, Seattle, Boston, Austin, Denver and more.

💰 Tax System

Federal income tax, state taxes, sales tax, ITIN/SSN, W2/1099, tax brackets 2026, deductions, filing process, IRS.

🌤️ Climate & Geography

50 states, climate zones, seasons, natural disasters, national parks, mountains, coastlines, deserts.

🏦 Banking & Finance

Opening bank accounts, credit scores (FICO), credit cards, wire transfers, investment, cryptocurrency regulations.

🏡 Housing & Accommodation

Renting vs buying, mortgage rates, Zillow/Realtor, lease agreements, tenant rights, best neighborhoods.

🚗 Transportation

Public transit, driving license (DMV), car buying, Uber/Lyft, airlines, Amtrak, interstate highways.

🛂 Citizenship

Naturalization process, N-400 form, citizenship test, dual citizenship, passport, voting rights, civic duties.

📊 USA at a Glance

The United States of America is the world's third-largest country by area and population. It is a federal republic consisting of 50 states, a federal district (Washington, D.C.), five major territories, and various minor islands. The U.S. has the world's largest nominal GDP at $25.5 trillion and is a global leader in technology, military, entertainment, and higher education.

The country attracts millions of immigrants annually through various visa programs. It is home to 8 of the world's top 10 universities and hosts the headquarters of most Fortune 500 companies. From Silicon Valley's tech innovation to Wall Street's financial power, the USA remains the most sought-after destination for skilled professionals worldwide.