Americans vote democracy and freedom as greatest invention, hamburger as most American food

A recent poll reveals Americans name democracy and freedom as the country's greatest invention. The humble hamburger also tops the list as the most American food, beating out hot dogs and pizza.

Americans participated in a poll identifying democracy and freedom as the nation's greatest invention. The hamburger also topped the list as the most American food. This news coincides with the return of the Washington Monument illumination, lighting up from July 1st to July 5th, celebrating America's 250th anniversary.