1 n-uncount Submission is a state in which people can no longer do what they want to do because they have been brought under the control of someone else. oft into N. The army intends to take the city or simply starve it into submission.
One Liberty Place stood as the tallest building in Pennsylvania for over 20 years until the completion of Comcast Center in 2008. Overall, seven of the ten tallest buildings in Pennsylvania are in Philadelphia, with the remainder being in Pittsburgh. Philadelphia is one of only five American cities with two or more completed buildings over 900 feet (270 m) tall.
Philadelphia's importance and central location in the colonies made it a natural center for America's revolutionaries. By the 1750s, Philadelphia had surpassed Boston to become the largest city and busiest port in British America, and second in the British Empire, behind London.n 1932, Philadelphia became home to the first International Style skyscraper in the United States, The PSFS Building, designed by George Howe and William Lescaze. It is the United States' first modern skyscraper and considered the most important one built in the first part of the 20th century.