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  2. History of Catalonia - Wikipedia

    en.wikipedia.org/wiki/History_of_Catalonia

    Catalonia saw the first railway construction in the Iberian Peninsula in 1848, linking Barcelona with Mataró, built with private capital. These initiatives partially benefitted the country's industrial regions, Catalonia, the Basque Country and later Asturias. As in much of Europe, the working class lived and worked in often inhuman conditions.

  3. Timeline of Catalan history - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_Catalan_history

    Lo mal any primer ("The first bad year"), great famine due to poor harvest. 1343: The counties of Roussillon and Cerdanya, previously owned by the Kingdom of Majorca, were reincorporated in to the Principality of Catalonia. First documented use of the term "Principality of Catalonia". 1348: Black Death in Barcelona. 1349: University of ...

  4. Timeline of numerals and arithmetic - Wikipedia

    en.wikipedia.org/wiki/Timeline_of_numerals_and...

    c. 20,000 BC — Nile Valley, Ishango Bone: suggested, though disputed, as the earliest reference to prime numbers as also a common number. [1] c. 3400 BC — the Sumerians invent the first so-known numeral system, [dubious – discuss] and a system of weights and measures.

  5. Catalans - Wikipedia

    en.wikipedia.org/wiki/Catalans

    This is an accepted version of this page This is the latest accepted revision, reviewed on 17 February 2025. People from Catalonia and Northern Catalonia For other uses, see Catalan (disambiguation). Ethnic group Catalans [a] Total population c. 9 million Regions with significant populations Spain (people born in Catalonia of any ethnicity; excludes ethnic Catalans in other regions in Spain ...

  6. Principality of Catalonia - Wikipedia

    en.wikipedia.org/wiki/Principality_of_Catalonia

    On several occasions during the first third of the 20th century, Catalonia gained and lost varying degrees of autonomy, recovering the administrative unity in 1914, when the four Catalan provinces were authorized to create a commonwealth (Catalan: Mancomunitat) [64] and, after the proclamation of the Second Spanish Republic in 1931, the ...

  7. Catalan counties - Wikipedia

    en.wikipedia.org/wiki/Catalan_counties

    The Hispanic March counties between the late 8th and 12th centuries that would become the Principality of Catalonia. The reconquista from the Moors by the Franks began in 785. [1] In 785, Rostany (or Rostaing) was made Count of Girona, the first, of what would later become the Catalan counties, to be established.

  8. Catalan number - Wikipedia

    en.wikipedia.org/wiki/Catalan_number

    C n is the number of noncrossing partitions of the set {1, ..., n}. A fortiori, C n never exceeds the n-th Bell number. C n is also the number of noncrossing partitions of the set {1, ..., 2n} in which every block is of size 2. C n is the number of ways to tile a stairstep shape of height n with n rectangles. Cutting across the anti-diagonal ...

  9. Autonomous Region of Catalonia (1931–1939) - Wikipedia

    en.wikipedia.org/wiki/Autonomous_Region_of...

    Proclamation of the Catalan Republic in Plaça de Sant Jaume by Francesc Macià, Barcelona, 14 April 1931. On 12 April 1931, local elections gave a large and unexpected majority in Catalonia (including Barcelona) to the Republican Left of Catalonia (Catalan: Esquerra Republicana de Catalunya, ERC), a party that had been founded three weeks earlier by the union of Macià's pro-independence ...