Suriin ang IDNStudy.com para sa mabilis at maaasahang mga solusyon. Magtanong at makakuha ng detalyadong sagot mula sa aming komunidad ng mga eksperto.

Which of the following contributed MOST to the forced removal of Native Americans from the Great Plains from 1867 to 1890?
A the desire to establish military posts
B the building of new canals
C the westward shift of the frontier
D the desire for more land to grow cotton