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Famous Firsts in Aviation

Cayley's Helicopter Wilbur and Orville Wright with their second powered machine. Source: Library of Congress. Orville Wright, Major John F. Curry, and Colonel Charles Lindbergh…

Top 50 Cities in the U.S. by Population & Rank

Top of Page Source: Getty ImagesThe United States is one of the largest countries in the world by land mass. It’s no surprise that some of the world’s largest cities are located there. What are the…