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 1664 the British gained control of the Delaware Colony. William Penn was given the deed by the Duke of York, and from 1682 to 1701 it was governed under Pennsylvania.