Complex sentence: Subsequent to the high profile the Celtiberian Tradition established in Spain this Tradition of Wicca was established in Portugal and has been registered in the relevant register and is therefore the first Pagan tradition recognized as religion in the history of Portugal.
Split into simpler sentences: Subsequent to the high profile of the Celtiberian Tradition established in Spain, this Tradition of Wicca was established in Portugal. It has been registered in the relevant register and is therefore the first Pagan tradition recognized as a religion in the history of Portugal.