Merovingian (about the lisp):
Well, this is a familiar nonsense that was probably invented to disturb and insult (not meaning that you do but the one who invented it).
They say that some king ¿Philip the Second? couldn't pronounce well, and that's why people in the Court spoke imitating his lisp, and this would be the reason for the pronounciation.
However, there are at least four strongest reasons each of which is enough to show that this is false:
1-If there were a learnt lisp, then ¿why can we pronounce that very lacking sound? We
can pronounce it, but we only do in the apropiate cases.
2-The South American colonization was rich in Andalusian, Canarian, and other recently conquered areas who spoke their deficient variety of spanish (Andalusia and mainly the southern part of Spain was under muslim control till decades or even years before Discovery of America, and spoke a diferent language). If you compare andalusian and canarian, pronounciation, you'll see it sounds very like South American. Because that's the spanish they learnt. Pronouncing "s", "c", and "z" the same, among other things is a way to simplify a language if you have to learn it. In fact, many Spanish academies simplify spanish for foreigners nowadays like that (only for beginners).
3- Not only Spain, but all spanish-speaking South America was under the control of the king, so everybody should have acquired that "lisp". If they mean that it only affected Spain, Why don't andalusians and canarians have "lisp"? If it was only in the Court, why peope living 300 miles away like galicians have the "lisp"?
4-If the claimed monarch was Philip the Second, then most of the population of Latin America were learning spanish, for America was discovered under Isabel and Fernando, the Catholic kings, Cortez (Cortés)conquered México (previously the only colonies were caribbean islans) it was under Emperor Charles the First of Spain (Charles V of Germany). With his son, Philip II, Spain had extended its control of all of latin América, but in
very recent times by then, so it becomes obvious that the indian and african population (most of which were beginning to learn Spanish by then)would have had to learn the lisp as they learnt spanish.
Wow! I ever wanted to explain this because I knew it would take me a lot! That's why I didn't say anithing although I saw post regarding this in the forum.