It’s a common trope among Catalonian* separatists (independentistes) to describe Catalonia’s relationship to Spain as one of colony to empire (see here, for example). It’s no coincidence that the movement has replaced the official flag of Catalonia (the senyera, 1) with a lone-star version (estelada, 2) that is modeled on the flags of Cuba (3) and Puerto Rico (4), former colonies of Spain.
(1) (2) (3) (4)
But I think that a better model for the relationship is that between a vassal and a suzerain in the feudal system of medieval Europe. Indeed, Catalonian nationalists (not necessarily separatists) celebrated 1987 as the millennial of Catalonia’s first independence because of what did not happen in 987: Count Borrell II of Barcelona did not pay homage to his overlord Hugh Capet, king of the Western Franks, when the latter was unable to give him military support against the invading Moors.
The present situation, with the Spanish prime minister, Mariano Rajoy, dismissing the government of Catalonia and replacing it with appointees from his own political party, is reminiscent of what happened in Austria in 1276, when the emperor Rudolf I (of the house of Habsburg) dismissed Ottokar II (who was also king of Bohemia) from the dukedom of Austria and placed the lands under direct imperial administration, to be governed by his sons.
Of course, the originally Swabian Habsburgs remained as rulers of Austria until 1918. Rajoy, on the other hand, has promised to hold new elections in Catalonia on December 21, and it’s unlikely that his party (the modern equivalent of a medieval dynasty), the Partido Popular, will do any long-time governing there, not being very… popular in Catalonia: it got 8.5% of the vote in the last election. Most of Catalonia’s center-right vote goes to the main nationalist party, formerly Convergència and now PDeCAT.
*I prefer to use “Catalonian” rather than “Catalan” when referring to the territory (the so-called principality) of Catalonia; I use “Catalan” for the language, culture and ethnicity, both inside and outside this territory. I like to make this distinction whenever the English language allows it, as with Somali and Somalian, Slovak and Slovakian, and even Greek and Grecian. This way I can talk, for example, about Catalonian Catalan as distinct from the Balearic and Valencian varieties of the language. What’s more, the French sculptor Aristide Maillol and the Valencian writer Joan Fuster considered themselves Catalans, but they were not Catalonians.