What problem might historians studying both

medieval Africa and America face?

The main problem that historias may have when studying medieval Africa and the Americas is that in this period, African and American societies rarely had writing. For example, neither the Aztecs nor the Incas had writing systems.

Written records are, along with archeological artifacts, the most important primary sources for historians when studying an era or period. If they study societies that lacked writing, they pratically have to rely only on archeology to draw conclusions.

i discarded the supernatant and kept the pellet in this part of the experiment because you have to return all unused chemicals into their original containers at the end of each labratory.

explanation: