<span>d. the unity of the African tribal groups
The unity of African tribal groups would not have changed the actions of the american colonies in buying slaves
hope this helps</span>
Answer:
Dr. Griggs could not find anything physically wrong with the girls so he determined they were bewitched. During this time period, people believed sickness was caused either by natural or supernatural causes. So, when Dr. Griggs' medical books had no explanation for what the girls were experiencing, he assumed it was witchcraft.
Explanation:
The most deadly illness the pioneers have faced was Oregon Trail, it was spread by for hunting food, picking berries, and most of all this terrible game kids used to play that made them realize the Oregon Trail was real. It also lead up to bad fever, cholera, and dysentery.
This is the main reason of the deadly illness pioneers had.
Hope this helps you :)
The concept of the city-state was an important innovation and development (and invention) of Art because these cities, such as Uruk or Lagash, are some of the earliest known complex urban centers, and the settlement of people in them made necessary the construction of walls, temples, and burial sites that today are recognized as archeological vestiges of exceptional significance.
Furthermore, since the people that had settled in them had at their disposal food resources and an administrative class that took care of their needs and secured their welfare, artistic and craft production flourished in them.