8. became the primary commercial enterprise and were the primary means of commercial transport.

Corporation

Trucks

Explanation:

There are various methods of commercial enterprise. There can be sole proprietor, partnership arrangement, corporation and joint ventures. It is dependent on the requirements of a person who wishes to enter the business. The primary commercial enterprise is corporation. It is regulated by the government and fund is collected from the shareholders. The primary mean of commercial transport is trucks. They are used to move raw material and finished goods from factory to the stores.

they should be similar or the same

see earlier