Aftermath of World War I: The 20th century

In the aftermath of World War I, the 20th century saw a tremendous shift in global politics, economics, and military power.

The Treaty of Versailles officially ended the war and established a new international order, with the League of Nations as its primary body of international law.

The League was unable to prevent the rise of fascism and the outbreak of World War II.

The United Nations was formed after World War II to replace the League of Nations and provide a framework for international cooperation.

The Cold War between the United States and the Soviet Union divided the world into two camps and created a period of tense international relations.

Decolonization saw the end of European empires in Africa and Asia, and new nations were created in the aftermath of World War II.

The 20th century also saw the emergence of the United States as a global superpower, with the U.S. economy the largest in the world.

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