PLEASE HELP! ILL MARK BRAINLIST!

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

European expansion into africa left native regimes intact but had a strong impact on local societies what does this mean

Why was the bill of rights so important to new york and virginia