What did the fox say?

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

During wwi, literacy tests were used to control immigration, which marked a return of what type of ideology in some americans?

Which is proper hierarchy or leadership roles in the senate from lowest to highest