How did humans get to South America

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

Who were the intolerable acts forced upon as a punishment for rebellion aganist the crown

The followed teachings of karl marx led the bolsheviks and become the first leader of the ussr