Answer:
Ridge and valley Provinces
Explanation:
This particular region is a major producer for Rocks such as sandstone, shale, and coal coal-bearing beds in United States.
The geographical structure of the region in Ridge and valley Provinces were very difficult to reach (even using modern means of transportation). This terrain make it impossible for the company to hire the people from outside the area and let them commute to the workplace everyday.
This is why companies who want to utilize the resources that exist in this territory have to build a mining town there and make the workers live there during the operation.
Surrounded by water
There were so many hills/mountains around the area that made traveling hard
Isolation from other cities
The Mississippians were a native American culture that inhabited the Mississipi River Valley and surrounding areas from 9th till 16th century. Their culture was unique in that they created Mounds, that is man-made hills, many of them are still existing today.
The Native American tribe called the Muscogee, or Creek, occupy some land in present day Alabama, Georgia, and Florida. Their capital is based in Oklahoma.
A balance as it measures mass
