Final answer:
Oases in the Sahara were good places for traders to come together because they provided essential resources and services, such as water, supplies, and a network of trading points. Traders could exchange goods and services at each oasis along the way.
Step-by-step explanation:
Traders often gathered in oases in the Sahara because these settlements provided essential resources and services. Oases offered a reliable water source for rest and rehydration, as well as a place to restock on supplies and provisions. Furthermore, oases created a network of trading points throughout the desert, allowing traders to exchange goods and services at each oasis along the way.
For example, salt was a valuable commodity in the Sahara, and traders would transport salt from oasis to oasis to barter for other goods. Oases also attracted nomadic communities and settled societies, making them natural meeting places for traders.