Which transportation development had the greatest long-term impact on the American economy?

Steamboat

Canal system

Horse-drawn cart

Steam locomotive

Verified Answer :

It was the transportation development of the "steam locomotive" that had the greatest long-term impact on the American economy, since this allowed for people and goods to be shipped across the country at a speed and cost that was only a fraction of what it had previously been.

Answer:

D- Steam locomotive

Explanation:

I got it correct on my test. Hope this helps!

Happy New Year btw <3