This map, from 1792, is a plan for the city of washington d. c. how is it related to philadelphia?

both cities were planned by charles l'enfant.
both cities were built at the intersection of major rivers.
both cities were constructed in the late 1700s.
both cities were planned using the grid system.

As I saw on the Internet the city map of Washington DC as published 1792, what I observed is that it has somewhat related to that of the city of Philadelphia. It can be implied from the map provided that both of these cities were built at the intersection of major rivers. Among these rivers are the Schuylkill River and the Delaware River in Philadelphia.