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
I would say A.) Granting Professional Licenses
Back in 1981, for those of you who remember, August 5 was the day that then-president Ronald Reagan fired more than 11,000 striking air traffic controllers. The air traffic controllers were fired two days after their union, PATCO, declared a strike. They were demanding a pay raise, a shorter workweek, and better working conditions. It was a move that some historians say laid the groundwork for today's assault on labor. Hope that helps, but if not visit this ∨
http://www.truth-out.org/news/item/25393-the-consequences-of-reagan-breaking-the-1981-air-traffic-co...