Rome eventually had to hire soldiers to defend the empire. What were the problems with recruiting the unemployed Romans or people from foreign countries?

Which four of these developments were made under mongol rule during the pax mongolica? the extension of the grand canal in china the spread of christianity the spread of weapons that used gun powder the invention of new medicines the establishment of a postal system the invention of geometric models of lunar motion

Which of the following is not located along the national road? a. cumberland, maryland. b. buffalo, new york. c. wheeling west virginia. d. vandalia, illinois.

Who was the founder of taoism whose name means "the old master"? a. laozi c. hanfeizi b. wu wang d. wu wudi