Who wrote the black codes

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

President wilson’s moral diplomacy led him to support 1. revolutions in russia. 2. increased trade with china. 3. independence for the philippines. 4. taking over cuba.

1. what was the purpose of the communist international organization?