The bull thing in iberia, has its origins in the basque country (poor basques, always speculating about them)
And they have the highest r1b of spain and only and 2,5% J2 one of the lowest.
Bull playing was forbidden in all muslim territory during the reconquista, and in the rest of the north, galicia, asturias(where reconquista began ) and cantabria, this tradition its inexistent ,but remained in basque country and navarre , not only bullfighting but also bull running, or throwing the bulls at the streets and other bull festivals. its a basque thing that was spread across spain and evolved in andalucia in modern bullfighting.
Basque traditional style of bullfighting was based in jumps over the bull, dodges and banderillas....
See this video, is in valencia(today basque style is still in use), its remember me alot at minoian bull jumping.
i cant link, search this in youtube "incredible spanish bull leapers"
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Modern bullfighting has its origins in medieval Castile, not in the Basque country. I think you are confusing with the bull race at the San Fermin in Pamplona.
The earliest recorded bullfighting in ancient times was in Catalonia at the time of the Punic Wars. It is likely to have been brought by the Carthaginians (who inherited it from the Phoenicians).