History
Federalism and Secessionist Movements in Multinational States
Quick fact
Spain's 1978 Constitution created a 'State of the Autonomies' granting significant self-governance to regions like Catalonia and the Basque Country, yet a 2017 unilateral independence referendum in Catalonia still escalated into a constitutional crisis.
Why this is interesting
Some countries grant regions their own parliaments and languages, yet still face angry separatist movements—while others hold together peacefully. What makes the difference?