Your answers are going to be:
1. B
2. C
Hope this helps! Please tell me if my answers are wrong.
C. Because Jews believe in the old Testament.
Native Americans' population declined because of infighting within the tribes, because of wars with the colonists but mostly because of the new diseases brought to their land by the colonists that their body was not use to and that their immune system could not fight off. -- Also because of population resulting in spreading of diseases -equals more death due to undeveloped medical tech
Germanic tribes, Visigoths