Question

why did the economies of western territories develop so differently from the economies of the northeast and south? western territories had inexpensive land and abundant natural resources. western territories had rocky soil and a large supply of slave labor. western territories had limited land and a large immigrant population. western territories had natural harbors and many navigable rivers.

Explanation:

The western territories had inexpensive land which was attractive for settlement and development, and abundant natural resources that could be exploited for economic growth. The other options are incorrect as the west didn't have a large supply of slave - labor (slavery was not a major feature there), it had more land rather than limited land, and natural harbors and navigable rivers were more characteristic of the Northeast.

Answer:

Western territories had inexpensive land and abundant natural resources.