Points for anyone merry christmas. points for anyone merry christmas

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 best describes the relationship between the united states and south korea today?

Can someone me write a paragraph on this topic i feel confused