I need help pleaseee

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

It may be reasonably inferred from the passage that sylvia’s attitude toward mistress molly’s antics is ?

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