.... It is still a demarcation line between four U.S. states, forming part of the borders of Pennsylvania, Maryland, Delaware, and West Virginia (part of Virginia...
2 Answers · Science & Mathematics · 07/02/2020
... to resemble a diamond in shape - part of the land was ceded by the state of Virginia and the other section was taken from Maryland, but when development of Virginia's portion slowed, much of the land...
6 Answers · Science & Mathematics · 07/04/2019
Delaware and Maryland. Philadelphia itself is considered a seaport, as the channel in the Delaware River allows vessels to draw nearly 40 feet of water beneath the surface.
4 Answers · Science & Mathematics · 11/05/2019