Which treaty established the principle of state sovereignty? 👤 By TheQuizWire ✅ Fact Checked 📊 Difficulty Hard 📅 Last Updated 01 Dec 2025 A. Westphalia B. Versailles C. Utrecht D. Vienna Check Answer 💡 Explanation: The Peace of Westphalia (1648) is credited with establishing the modern system of sovereign nation-states. 📚 Topics: Miscellaneous Nation 🎯 Exams: CSS GEN PMS
