It was the fact that world super powers at the time (U.S) and (U.S.S.R) where building up an armory of nukes but they both knew if they where to use these weapons it would utterly destroy the world.
Here's a memory aid: (U.S): hey Russia lets not kill each other with nukes in this war lets just keep it "COOL" and spy on each other instead
Mostly they affected it through their imperialism. They would colonize and take over countries for resources, and with them they would bring their technologies and things that they needed. After they left these things stayed, things like telephone and telegram lines and similar things. Culturally, they would mostly disregard the local culture and impose their own which would often be accepted and kept by the locals, but often there was also warfare.
What do you need to know about the Indus River Valley people?
Answer:
Guilds
Explanation:
Guilds helped build up the economic organization of Europe, enlarging the base of traders, craftsmen, merchants, artisans, and bankers that Europe needed to make the transition from feudalism to embryonic capitalism.
