Which event had the biggest impact on the lives of native americans in the mid 1800’s? the end of the civil war? the california gold rush? the spanish american war? the invention of the steamboat?

What impact did president grant’s executive order in 1876 have upon the cahuilla tribe? it forced them to disarm and surrender all money and firearms. it forced them to accept relocation to subpar lands in canada. it forced them to relocate to the cabazon reservation. it forced them to give up rights to water and other natural resources.