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Back in the Day

Credit: AP/Erin Hooley

America 250: From risky adventure to routine trip: How federal rules reshaped air travel

Augmented reality exhibit brings you to the front lines of the American Revolution

America 250: The helicopter鈥檚 impact on the US military

Today in History: April 25, Spanish-American War declared

America 250: How William Levitt helped create the modern American suburb

Today in History: April 24, the 1916 Easter Rising in Dublin