William Penn arrives and names the area Philadelphia.
Benjamin Franklin proves that lightning is a form of electricity with his kite experiment.
Growing unrest over the Stamp Act passed by the English Parliament.
The first Continental Congress is held at the State House in Philadelphia.
Declaration of Independence is passed on July 2.
Pennsylvania is the first state to abolish slavery.
Philadelphia is made the United States capital, holding that title until 1800.
Germantown railroad built.
The Civil War begins, which is opposed by the city's upper classes.
Battle of Gettysburg takes place.
At the city's Centennial Exhibtion, the telephone is demonstrated.
First use of electricity for lighting.
The first Mummer's Parade is held.
The Philadelphia Museum of Art is opened.
Society Hill restoration is begun.
The Liberty Bell is moved to Independence Mall, and America's 200th birthday is celebrated.
U.S. Constitution bicentennial celebrated at Independence Hall.
Plans for renovating Independence Mall are announced by the National Park Service.
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