What is the United Nations and what did it do?

the united nations is a peace-keeping organization made after WWII by the allies. the five permanent "seats" of the Security Council are France, America, Britain, Russia and China. there are five other "seats" change out every year. the other part of the UN is the General Assembly, which has an ambassador or two from almost every country in the world, minus a handful of smaller, third world countries. The UN's primary job is to keep peace, and promote economic growth.