Answer: Concurrent schedule of reinforcement
Explanation: In psychology, such a schedule means representing two or more concurrent schedules that are independent. In doing so, each of them results in reinforcement, and each of the schedules is available simultaneously. This means that each of the independent schedules is equally effective and requires independent responses, where one does not have to respond to each of them.
Answer:
please mark me as brainlist
Explanation:
The interaction between Muslim merchants and North African merchants provided a gateway for the Islamic belief system to influence the country of Mali. The reason for the location where it spread to was basic geography and their already-stated interaction through trade caused a mix of cultures and belief systems.
The answer is c : developing a complex system of writing
