The correct answers are A) they establish a means of obtaining new goods through the region and D) trade routes brought a cultural exchange that resulted in significant advances in civilization throughout the region.
The sentences that best describes the trade routes in the early River Valley civilizations are: They establish a means to obtaining new goods through the region and trade routes brought a cultural exchange that resulted in significant advances in civilization throughout the region.
Early civilizations established nest to rivers such as Tigris, Euphrates, Indus, and the Nile River. People settled there for the big benefits of water to agriculture practices. The best examples are the people from Mesopotamia, the Egyptian civilization, and the Chinese civilization. The trade routes of these early civilizations helped to exchange products that other cities did not have and their cultures improved the advances for each civilization.