CATALONIA
Proud of its own identity and language, Catalonia is one of Spain's richest and most highly industrialised regions, and also one of the most independent-minded.
With a distinct history stretching back to the early middle ages, many Catalans think of themselves as a separate nation from the rest of Spain.
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Timeline - key events in Catalonia's history
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This feeling is fed by memories of the Franco dictatorship, which attempted to suppress Catalan identity, and is nowhere more clearly expressed than in the fierce rivalry between FC Barcelona and Real Madrid, Spain's top football clubs.
A roughly triangular region in Spain's far north-east corner, Catalonia is separated by the Pyrenean mountains from southern France, with which it has close historical ties.
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Image caption Building human towers - "castells" - is a Catalan tradition originating in the 18th century
Most of the region's population lives in Barcelona, its vibrant political and economic hub and a popular European travel destination.
Holiday-makers also flock to the Mediterranean beaches of the Costa Brava and Costa Daurada/Dorada, and the Pyrenees are popular with hikers, making tourism an important part of Catalonia's economy.
At a glance
Politics: Catalonia's leadership is keen to split from Spain, and held an independence referendum in 2017
Culture: Catalonia's laws require teachers, doctors and public sector workers to use Catalan, an official language along with Spanish
Economy: Catalonia is one of Spain's wealthiest but most indebted regions. Harsh austerity measures have boosted separatist sentiment
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But it is manufacturing - traditionally textiles, but more recently overtaken in importance by the chemical industry, food-processing, metalworking - that make the region Spain's economic powerhouse, along with a growing service sector.