Answer:
The plains in this area are southerly sloping, dissected, and uneven. Low, rolling hills, large, gently sloping ridgetops, a few steeper side-slopes where streams cut through, and broad, flat bottomlands along low-to-moderate gradient streams with sand and clay bottoms characterize the landscape.
Answer:
Steam-powered trains.
Explanation: Railroads provided the most dramatic transportation growth during the 1800s. They facilitated the movement of people, goods, and information, decreased shipping costs and time, and strengthened the links between the Old Northwest and the East.