Complex sentence: After the Peace of Westphalia, which ended the war in favour of nations deciding their own religious allegiance, absolutism became the norm of the continent, while parts of Europe experimented with constitutions foreshadowed by the English Civil War and particularly the Glorious Revolution.
Split into simpler sentences: After the Peace of Westphalia which ended the war in favour of nations deciding their own religious allegiance. Absolutism became the norm of the continent, while parts of Europe experimented with constitutions foreshadowed by the English Civil War and particularly the Glorious Revolution.