Answer:
Step-by-step explanation:
1. The Great Powers of Europe (Britain, Prussia , Russia and Austria) began preparing for the postwar world as the Napoleonic Wars came to a close in the second decade of the 19th century.
2. They established what became known as the Concert of Europe, starting with the Congress of Vienna, to bring about a balance of power in Europe and avoid further conflict.
3. The Vienna Congress abolished the Napoleonic world and sought to restore the monarchies that had overthrown Napoleon.
4. The Congress was the first occasion in history where national delegates came together on a continental scale to formulate treaties rather than relying mostly on messages between the various capitals.
5. The Concert of Europe formed the fundamental structure for European international relations until the outbreak of the First World War in 1914, amid later changes and diplomatic breakdowns a few decades later.