The league of nations was formed as a reaction to what conflict?

Which of the following is one example of an ideological conflict that became one of the causes of world war ii?

Yugoslavia a: nato b: warsaw pact c: not a member of either alliance

Which of the following is an example of a concurrent power? a. when a group of states work together to regulate interstate commerceb. when a federal law enforcement agency state policec. when a state creates a treaty with a foreign governmentd. when a local government collects taxes on imports