All of the Following Are True About the League of Nations

Multiple Choice

All of the following are true about the League of Nations except that

A) the League was established by the Treaty of Versailles.
B) its main purpose was to resolve international disputes without war.
C) the League was effective because of the strong leadership of the United States.
D) it created a system of mandates that recognized the gradual retreat from colonialism.
E) it failed to prevent the escalating violence that culminated in World War II.