Answer:
A: They had no written language, so there was no way to preserve the information.
Explanation:
Diseases introduced by white settlers.
The main reason for the wipe-out of Native Americans was the threat of the diseases introduced by White Europeans. This ended up killing many Native Americans across different tribes, as they had no immunity to these diseases and had never dealt with these kinds of illnesses before. This was a rampant problem and attained the Native Americans quickly after the European settlers arrived.
The more education that everyone has the smarter they will be and they will make the society better.
Answer to this is Jefferson Davis