You have made a very difficul question.
Castelliano=Castellano is our language at Latinamerica, but here is the difficult part. Here we have different entonations.
Example: At Argentina and Ecuador people stress the second Syllable, include some of them writte the stress in the second syllable but acording with the gramatical rulles.
queres =quieres is stressed in the second syllable but the stress is not writte
But dear Oriani, all the countries have as a base the spanish language, even if spanish people pronounce the C as SH or the X as J.
I hope you could understand my explanation