Early Scientists followed the Old Ptolemaic system of the Universe which is Geocentric

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

What did the committees of correspondence do ? a) . all of these b). communicated c). contacted foreign government d). planned for actions the colonies took together

How did president wilson compensate for the reduced government income resulting from his lowering of tariffs? a. he taxed businesses b. he charged federal interest on loans c. he cut government expenses d. he created an income tax