Wilsonianism is a way of thinking that was developed by the former US President, Woodrow Wilson. The idea behind Wilsonianism is the belief that countries should have the right to self-determination and should be able to decide their own government, laws, and decisions free from outside interference by larger powers. Another element of Wilsonianism is the idea that diplomacy and international law should be used to settle disputes between countries, instead of resorting to war or violence. This can be accomplished by forming international organizations to help promote peace, like the United Nations or NATO. In short, Wilsonianism is about working together to make the world a better, safer place for everyone.