<span>technological advances that lowered transportation costs dramatically</span>
Answer:
Vw wagons are what They are called
Explanation:
They were routes which allowed pioneers to move to the west in the 19th century
Answer:
Topography is the shape of the land. And area's topography may be flat, sloping, hilly, or mountainous. The topography of and area includes the area's elevation, relief, and landforms. Elevation. The height above sea level of a point on Earth's surface is its elevation.
Explanation:
