1648

Westphalian system

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The Peace of Westphalia (1648) that ended the Thirty Years’ War, inaugurated the modern European nation state system and emerged the era of sovereign states. Not only did the Westphalian system bring relative peace after the chaos of the century preceding it, but the treaty has become the foundation of the modern international system and relations. The Peace of Westphalia has several key principles, which explains its importance and impact on the world today. These are the principle of sovereignty of states, the principle of equality between them and the principle of non intervention of one state in the internal affairs of another state.