Key features of the Concert of Europe:
* The Concert of Europe was a loose association of the major European powers, including Austria, France, Great Britain, Prussia, and Russia.
* The Concert of Europe met regularly to discuss common issues and resolve disputes peacefully.
* The Concert of Europe was based on the principle of balance of power, which held that no single country should become too powerful and threaten the security of the others.
* The Concert of Europe was successful in preventing major wars between European powers for nearly a century.
The Concert of Europe and the outbreak of World War I:
* The Concert of Europe failed to prevent the outbreak of World War I in 1914.
* There are a number of reasons why the Concert of Europe failed to prevent World War I, including:
* The rise of nationalism in Europe
* The arms race between European powers
* The growing rivalry between France and Germany
* The Concert of Europe was ultimately replaced by the League of Nations after World War I.