Why Is Pennsylvania Nickname The Keystone State?

Why Is Pennsylvania Nickname The Keystone State? Pennsylvania’s essential role in the founding of the United States earned it the nickname, the “Keystone State.” The term “keystone” comes from architecture and refers to the central, wedge-shaped stone in an arch, which holds all the other stones in place. Why does Pennsylvania have the nickname Keystone

What Are Some Important Events That Took Place In The Empire State Building?

What Are Some Important Events That Took Place In The Empire State Building? March 17, 1930 – Construction begins with 3,000 workers building 4.5 floors per week. April 1931 – At completion, it becomes the tallest building in the world. May 1, 1931 – President Herbert Hoover turns on the building’s lights, officially opening it,