Relier Pairs Connecting the CoastsVersion en ligne LL Comp Build Know, Railroads; Connecting the Coasts Set 2 par Stephanie Turner 1 Last Supporting Idea 2 Next Supporting Idea 3 First Supporting Idea 4 Main Idea Mules, carts, and boats moved caro, but they were slow. The railroads gave hope of a new life to many people. Congress passes laws to make railroads. The country needed a way to connect people on each coast.