Answer:
the spread of Islam
Explanation:
The spread of Islam at times created tensions between the populations already living in North Africa and West Africa and the Muslim groups who were coming into the area. Some of these Muslim groups started wars against the natives, whom they viewed as godless pagans.
Answer:
External validity.
Explanation:
Whether the results of this study help us to understand the relationship between cell phone use during class lectures and work performance in real-life institutions is a question of <em>external validity</em>. Whether the conclusions of a scientific study can be applied to other institutions and other activities is a matter of external validity. External validity is the generalization of the results of a scientific study to other contexts.
Since there were bobcats at the time, and traveling through the woods was hard, water was their transportation. This is why they built canoes to move on rivers and other waterways. Water was also a source of food and items for trade, such as seashells for trading. Water was prosperity. Hope this helped!
B. People divided into groups because of unequal access to resources
