How did the transcontinental railroad affect the US economy?

The trade of goods between the east and west coast.

Explanation:

The transcontinental railroad affected the US economy by transporting crops and material to the markets in the east coast and in return transported manufactured goods over to the west coast. The railroad also began an easier form of international trade. Hope this helps!

there are no mutiple choices here

i think it was because of how protected egyptian civilization was was which allowed them to evolve without much outside influence.