Reapers' War: Junta de Braços (Assembly of Estates) of the Principality of Catalonia summoned. It assumes the sovereignty and enacts a series of revolutionary mesures which will lead to the Catalan Republic.

The Reapers' War, also known as the Catalan Revolt or Catalan Revolution, was a conflict that affected the Principality of Catalonia between 1640 and 1659, in the context of the Franco-Spanish War of 1635–1659. Being the result of a revolutionary process carried out by Catalan peasantry and institutions, as well as French diplomatic movements, it saw the brief establishment of a Catalan Republic and the clash of Spanish and French armies on Catalan soil over more than a decade.

The Junta de Braços or Braços Generals (States-General) was, during the early modern age, an institution of the Principality of Catalonia, convened by the Generalitat of Catalonia in cases of emergency or urgency. It was composed by the representatives of the Catalan Courts who at that time were in Barcelona.

The estates of the realm, or three estates, were the broad orders of social hierarchy used in Christendom from the Middle Ages to early modern Europe. Different systems for dividing society members into estates developed and evolved over time.

• The best known system is the French Ancien Régime, a three-estate system which was made up of a First Estate of clergy, a Second Estate of titled nobles, and a Third Estate of all other subjects.
• In some regions, notably Sweden and Russia, burghers and rural commoners were split into separate estates, creating a four-estate system with rural commoners ranking the lowest as the Fourth Estate.
• In Norway, the taxpaying classes were considered as one, and with a very small aristocracy; this class/estate was as powerful as the monarchy itself. In Denmark, however, only owners of large tracts of land had any influence. Furthermore, the non-landowning poor could be left outside the estates, leaving them without political rights.
• In England, a two-estate system evolved that combined nobility and clergy into one lordly estate with "commons" as the second estate. This system produced the two houses of parliament, the House of Commons and the House of Lords.
• In southern Germany, a three-estate system of nobility, knights, and burghers was used; this system excluded lower clergy and peasants altogether.
• In Scotland, the Three Estates were the Clergy, Nobility, and Shire Commissioners, or "burghers", representing the bourgeoisie and lower commoners. The Estates made up a Scottish Parliament.