How cannabis is consumed. In a 2010 National Survey on Drug Use and Health (NSDUH), 17.4 million people in the United States said they had used marijuana in the past month. According to the survey, marijuana is the most commonly used illegal drug.
Now the largest city in Pennsylvania, Philadelphia served as the nationâs capital from 1790 until a permanent capital was established in Washington, D.C., in 1800. Both the Declaration of Independence and the U.S. Constitution were signed in Philadelphia.
In 1736, a large area to the north of Philadelphia, embracing the present site of Allentown and what is now Lehigh County, was deeded by 23 chiefs of the five great Indian nations to John, Thomas, and Richard Penn, sons of William Penn.