settlers of the frontiers were challenged by the native americans already living in those lands. what options did the government see for the future of native tribes in the west?

chronological thinking is an indispensable tool to structure a historical narrative and to give meaning to a sequence of events. the final section presents the results of a survey to test the chronological thinking of lower secondary school students carried out by the educational research institute.

answer; health-related quality of life;

answer; personally distressful;