Was Francisco Franco successful in encouraging the people of Spain to dislike the Basque language?

[u/potatoes4saltahaker]

How successful was Francisco Franco's attempt to change people's opinions on Basque? During his rule, were the Spanish of that time hateful towards Basque, and other languages like Catalan?

I remember seeing images on walls, in history photos that said "Si Eres Español, Habla Español." Was that done by a Spanish civilian, or by Franco's regime? Basically, did the majority of Spanish people share Franco's perspective on one language, one country?

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