What was one major difference in the way NATO and the Warsaw Pact were created? NATO involved the participation of the countries of Eastern Europe, while the Warsaw Pact involved Western Europe. The Warsaw Pact was primarily a military agreement, while NATO was primarily an economic agreement. NATO was established to fight the spread of communism, while the Warsaw Pact was formed to protect communism. The Warsaw Pact is still in existence today, while NATO disbanded soon after the fall of communism in Europe.