In 1887, Congress established a commission to regulate the railroads by passing "The Interstate Commerce Act", which was mainly intended to keep railroad companies from becoming monopolies.
Answer:
Advanced cities
Explanation:
It's not necessary to have an advanced city; because not all civilizations have to be large
Hope this helps! :D
The answer to your question is,
Continents on the east side could fit snugly against those on the west.
-Mabel <3