Sorry can't give an answer without the proper graph
The rise of power can cause problems if ghana rises so they would cause a war if umayyad did they would cause a system mathematical droubt but if this isn't the answer and this is a multiple choice answers please post them
Answer: The Chinese mostly gave it to them and a lot of other things too
Explanation: The Muslims also introduced the use of trip hammers (human- or animal-powered) in the production of paper, replacing the traditional Chinese mortar and pestle method. In turn, the trip hammer method was later employed by the Chinese.
It basically legalized segregation because they said that it did not violate the 14th amendment
Poll taxes, literacy tests, seperate but equal, segregated areas come to mind