Enviorment: It's moist and damp with regular annual rainfall to supply with rich soil. It includes riverbeds that easily fill up and the coastal plains is made up of natural harbors.
Adaptations: The coastal plains are very easy cato farm on, allowing many things to grow there. With such fertile land they are able to trade with a lot of people. Europeans traded a lot with the people here because of their succesful land and crops. Many people are able to live there with no added effort in order to survive.