How did technology make ww1 different from previous conflict

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.

Under the new imperialism europe did not need large numbers of people to control territories because of

Was the battle of iwo jima over after us troops raised the flag on mt. suribachi?