Water features that might have promoted trade and the movement of goods around the americas

There are many water features that have promoted trade and the movement of goods around the Americas. The ocean, and in particular the Atlantic one, is one of these, as it allowed for trade to take place between Africa, Europe and the Americas. Moreover, many rivers within the continent have been significant in allowing for trade of goods among many peoples. Some of these rivers are the Mississippi, the Bravo or Grande and the Amazon.

the roman army grew in size and became dominant in the mediterranean region.