What was a significant effect of world war 2 ?

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

In 150-200 words, name three advancements made by the egyptians and tell how they impacted the culture.

Brainliesttt ! : ) -global military, political, and psychological responses to terrorism?