Questions: Treaty of Westphalia

Question 1

After 1648, the Holy Roman Emperor wishes to intervene militarily in a Protestant prince's territory to restore Catholicism. Which principle established at Westphalia most directly undermines the legitimacy of this action?

• A. The principle that religious wars are prohibited in the Holy Roman Empire after 1648
• B. The principle of territorial sovereignty — that rulers hold supreme authority over internal affairs within their borders, including religious settlement
• C. The Pope's declaration that military force may not be used to settle religious disputes
• D. The Augsburg principle that rulers must tolerate all three recognized Christian denominations equally

Answer: (B)

Westphalia established the principle that territorial rulers held supreme authority over internal governance, including religious settlement — and that no external power, including the Emperor or Pope, could legitimately intervene in a prince's domestic affairs. The Emperor intervening to restore Catholicism in a Protestant territory would violate this emerging norm. Note that the Augsburg Peace (1555) introduced cuius regio, eius religio — whose realm, his religion — but Westphalia extended it to include Calvinism and hardened the sovereignty principle. The key innovation is not a prohibition on religious war per se, but the reframing of relations as between sovereign equals rather than within a Christian hierarchy.

Question 2

The 'Westphalian myth' refers to which historiographical problem?

• A. The myth that Westphalia ended the Thirty Years War, when actually fighting continued until 1651
• B. The story, largely constructed by later theorists rather than contemporaries, that 1648 created the modern state system in a single clean break from the medieval order
• C. The false belief that Westphalia established religious freedom for individuals rather than just for territorial rulers
• D. The myth that both treaties (Osnabrück and Münster) were signed simultaneously, when actually Osnabrück was signed six months earlier

Answer: (B)

The 'Westphalian myth' is the scholarly label for the retrospective over-interpretation of 1648 as the founding moment of the modern state system. Modern historians note that the Holy Roman Empire continued to function after 1648, cross-border religious identities persisted, interventions in neighbors' affairs continued, and contemporaries did not describe Westphalia as creating anything like a 'Westphalian system.' The concept of Westphalian sovereignty — territorial, exclusive, internally supreme — was largely theorized and codified by international law scholars in the 19th and 20th centuries looking backward. What Westphalia did was establish a language of sovereignty that subsequent generations would develop, not a finished system that sprang into existence in 1648.

Question 3

The Peace of Westphalia established, in principle, that relations between states should be relations between juridical equals — each supreme within its own borders — rather than relations within a hierarchy of Christian authority.

• T. True
• F. False

Answer: True

This is the core principle Westphalia contributed to the emerging international order. Before 1648, the theoretical framework was a Christian hierarchy: the Emperor and Pope stood above mere princes, with the authority to adjudicate claims across Christendom. Westphalia replaced (in principle) this vertical hierarchy with a horizontal order of sovereign states, each supreme within its territory and juridically equal to the others. This is why the treaties are treated as foundational for modern international law, the concept of non-intervention, and eventually the UN Charter's Article 2(1) affirming the sovereign equality of member states — all trace their lineage to the Westphalian norm.

Question 4

Historians now broadly agree that the Peace of Westphalia created the modern international state system in a decisive break from the medieval order, even if the transition took decades to fully implement.

• T. True
• F. False

Answer: False

This is exactly what the 'Westphalian myth' critique disputes. Modern historians emphasize continuity alongside change: the Holy Roman Empire functioned for another 158 years after 1648 (until 1806); cross-border religious solidarity persisted; intervention in neighbors' affairs continued in practice; and contemporaries did not perceive a clean systemic break. The 'Westphalian system' as a conceptual framework was largely constructed by later scholars — 19th-century jurists and 20th-century international relations theorists — reading their present concerns back into 1648. Westphalia established important principles and a new diplomatic language, but the transformation to the modern state system was gradual, contested, and incomplete for centuries.

Question 5

Explain what the 'Westphalian system' means as a concept in international relations, and why historians caution that the 'Westphalian myth' overstates what actually changed in 1648.

Model answer: The Westphalian system refers to a framework of sovereign, territorially-defined states that are juridically equal and supreme within their own borders — no external authority (emperor, pope, church) can legitimately intervene in their domestic affairs. Historians caution that this system was not fully created in 1648: the Holy Roman Empire persisted, religious interventions continued, and the concept was largely theorized retrospectively by later jurists and IR scholars. What 1648 produced was a language and set of principles that later generations developed into the modern state system, not a finished transformation.

The distinction matters practically and analytically. If Westphalia was a clean founding moment, then deviation from its principles (intervention, pooled sovereignty in organizations like the EU) looks like regression. If Westphalia was one stage in a long evolution, then the 'system' is always in process rather than fixed. For international relations, the Westphalian frame remains influential not because 1648 was a clean break but because the principles it articulated — sovereignty, non-intervention, juridical equality — became the dominant normative vocabulary through which states negotiate their relations, from the Congress of Vienna through the UN Charter to contemporary debates over humanitarian intervention.