The _ was formed to defend against native americans

American Indians culture had been stripped away by measures like the Dawes Act, which had ended tribal government and authorized the sale of tribal land to individuals. Between the years 1887 (the year the Dawes Act came into effect) and 1934 (known as the "Allotment era") the government took over 90 million acres (360,000 km2) of tribal lands that were previously guaranteed to tribes by treaties and federal law. Henry Dawes who authored the Dawes Act, was quoted as saying that to be civilized, one must "wear civilized clothes...cultivate the ground, live in houses, ride in Studebaker wagons, send children to school, drink whiskey and own property."

Antonio Luhan described how government policies and the Bureau of Indian Affairs commissioners who enforced them overwhelmed American Indian culture,

c.) biotic: snails; abiotic: temperature climate

the tariff was created to protect industry in the northern part of the united states. industries in the north were being driven out of business by imported goods that were priced at a low rate. the goal was to protect these industries   by taxing the goods.