C) nations agree to work together as a team to make it easier for them to manufacture expensive items.
This is probably biological warfare because it's not allowed according to the Geneva congress. Using poisons, toxic matters, viruses and bacteria, as well as flamethrowers and things like that are forbidden or else it will be considered a war crime and people will answer for it. It was practiced in World War 1 but was forbidden after.
Answer:
mutually assured destruction was an agreed upon course of action that stated if two countries were to get into a nuclear war, a majority of the populations of both the countries would dwindle and utterly destroy both. Because both the U.S. and U.S.S.R. did not want to lose themselves as countries and their populations, the Cold war never had any nuclear action taken, hence the name Cold War.
Explanation: