How did the pioneers significantly affect Native Americans? Settlers refused to help Native Americans find better sources of water. Settlers helped Native Americans preserve native plants and animals. Settlers spread diseases that killed thousands of Native Americans. Settlers adopted some of the customs of Native Americans.

it is the third answer the  europeans arrival to the natives land led to the death of many natives by war and being exposed to new viruses and sickness

the cost of college has risen faster than inflation for many years.

the high price of student services and administration are two reasons for the rapid increase in cost.

a direct vote in which an entire electorate is invited to vote on a particular proposal. this may result in the adoption of a new law.