D. What impact did canals and new roads have on the westward expansion of the United States?​

Roads and canals made it easier for people to transfer good to other places.

Explanation:

Canals and new roads made it easier for new settlers to travel and transport goods to the West. Such things as goods would take months to get to the place that they needed to go because they had to take a long route or a route that had not been taken before. This made their tread harder and more frustrating. But now with roads and canals the paths were cleared and more easy to navigate.

i only have part a but here is the first one: - lewis and clark are born

- lewis marries sacajawea and clark is jealous  

- clark drowns lewis and then goes to jail