What does the word "impel" mean? Why might Jefferson have chosen this word over words like “caused”?

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.

semi-desert lowlands, hope this !

answer; no longer than a reasonable period of time;