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
A business monopoly is where one business dominate/accounts for 100% of the market. There are many buyers but one seller, high barriers to entering/exiting the market, and the business is a price setter
Answer:
If you visit the Senate chamber during a session on an average day, you're most likely to find the session presided over by the vice president of the United States-A.
If you're asking for just two random explorers, then Meriwether Lewis and William Clark. But im not really sure if thats what youre asking or not...