What invention sparked the renaissance period

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 event was the main reason for the announcement of the quit india movement? what were the results of the movement?

What two advances did europeans borrowed from china