20 POINTS A major goal and outcome of the Sibley expedition involved
A. collecting soil samples of the Great Plains
B. claiming Oklahoma land for the United States
C. establishing peaceful relations between Americans and important American Indian tribes
D. demonstrating that the Great Plains had rich mineral deposits to mine

D.

Explanation:

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i do not believe this was true indefiantly the native americans would have lsot aganist america one they didndt have the resources and allies that america had and 2   indians werent as advanced at the time as they were not 3 americans had the expreince because some of the soliders from other wars fought in that war and were attecked etc