two areas that made it possible for people in these ecosystems to use the trans-Saharan trade route.
1. Natural resources: Areas with access to valuable natural resources such as gold, salt, and ivory were able to use the trans-Saharan trade route to exchange these goods with traders from North Africa and other regions. The availability of these resources provided an economic incentive for people to participate in long-distance trade.
2. Geographic location: Regions located along established trade routes and close to oases or water sources in the Sahara Desert were able to facilitate trade and serve as important stopping points for caravans traveling across the desert. These strategic geographic locations made it easier for people in these areas to engage in trans-Saharan trade and benefit from the exchange of goods and ideas.