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В Испании сепаратизм цветёт и пахнет. В принципе, это вполне естетсвенно в любом многонациональном государстве. Но страна не хочет терять страну Басков и Каталонию по причине того, что это просто суперважные регионы для экономики Испании.
Так что география это просто сила, а не просто кусочки суши.
Помнится, что наша учительница в школе рассказывала, что во всех войнах причина чисто экономическая.

Spain was not going to lose Catalonia without a fight. There are many reasons for this, including national pride and economics, but one sometimes overlooked is geographical. Throughout Spain’s history armed forces from the north have moved into the country by using the narrow belts of flatter land each side of the Pyrenees – the Basque Country in the west and Catalonia in the east. The most efficient way of defending Spain in the north is to block these corridors, therefore the idea of an independent Catalonia or Basque state controlling them is anathema to Madrid. If either were hostile to Spain it would become a nightmare. There are now road tunnels through the Pyrenees, but from a military perspective these can be easily blocked. The corridors also lead into Spain’s major land-based supply routes from the rest of Europe, and the two regions are home to some of Spain’s biggest ports, including Barcelona and Bilbao.