Yep thewintershoulder is right. there might be more.
Answer:
15. its called the National Road.
16. It begins in Vandalia, Illinois and ends in Cumberland, Maryland, and vice-versa.
17. roughly 620 miles
18. in the year 1811
19. in the year 1828
20. no idea, but you can figure that out
Explanation:
hope that helped.
