Metternich's rule refers to the political and diplomatic strategies employed by Austrian statesman Klemens von Metternich from the early 19th century until his resignation in 1848. It was characterized by a strong commitment to conservatism, maintaining the balance of power in Europe, and suppressing revolutionary movements. Metternich's approach significantly influenced the establishment of the Concert of Europe, which aimed to prevent the spread of liberal ideas and maintain the status quo in European politics.