French Wars of Religion

What happened

After the Protestant Reformation, France's Calvinist Huguenots (about 10% of the population by 1560) clashed with Catholic dominance. Between 1562 and 1598, eight major wars erupted, often triggered by royal succession disputes and noble family rivalries. The massacre of Protestant Huguenots on St. Bartholomew's Day (August 1572) killed 10,000-30,000 and shocked Protestant Europe. Battles raged from Paris to the provinces; foreign powers (Spain, England, Rome) supported factions. The wars devastated the French economy and population. Henry of Navarre (a Huguenot) emerged as the strongest warlord and converted to Catholicism to gain the throne as Henry IV (1589). The Edict of Nantes (1598) granted Huguenots religious freedom and political rights.

Why it mattered

The Wars of Religion killed 2-3 million people and revealed the fragility of religious pluralism in early modern states. They established the principle of religious toleration (limited) in European politics. Henry IV's pragmatic conversion and the Edict of Nantes created a model for managing religious diversity. The wars' devastation contributed to France's decline relative to Spain in the late 16th century.