During the first hundred years of european exploration, what was the main cause of the decline in the number of native americans living in north america?

Which of these questions is most likely to have been asked by a person with a federalist vievw a. "how can the govemment control violent uprisings without a national army? " b. "what if the govemment asks for taxes that some people can't pay? " c. "how can the govemment meet the needs of both small states and big states? " d. "what if wealthy property owners are allowed to get their way all the time?