Final answer:
The treelined Philadelphia parkway modeled on the Champs-Elysees is named the Benjamin Franklin Parkway, after Founding Father Benjamin Franklin.
Step-by-step explanation:
The treelined Philadelphia parkway named after a Founding Father and modeled on the Champs-Elysees is the Benjamin Franklin Parkway. It is named in honor of Benjamin Franklin, one of the most prominent Founding Fathers who contributed significantly to the Enlightenment ideals that shaped the United States. The parkway, which resembles the famous Champs-Elysees in Paris, is a testament to Franklin's enduring legacy and to the cultural and intellectual links between the United States and France.