Could I earn a higher salary in physical therapy if I speak Spanish?

Spanish is my second language, but I would consider myself fluent (Spanish major, spent a year in Costa Rica studying abroad, girlfriend is a native speaker).

I know my potential to get a job will increase, but would my salary increase as well?

In Spanish-speaking world, only Mexicans speak “¿Qué pasó?” ?

Does "¿Qué pasó?" only belong to Mexican Spanish.In Mexican Spanish, "¿Qué pasó?" means "What have you been up to ? " when greeting someone
What about Spaniards, Argentine , Costa Rica? They say something else instead of "¿Qué pasó?"True or False?

Which is your favorite Latin American Spanish accent?

I looooove Spanish! It's such a beautiful language!! I was just wondering what your favorite Latin American Spanish accent was?? I asked this in another category, but I didn't get much answers so I'm asking again :)
Oh, thanks for asking :) Unfortunately I'm not that good enough to really tell the difference between each other that much, or at least not enough to tell what is attractive or not. But the ppl I've asked have said that they liked; the Argentinian accent, Costa Rica, Colombian, and Puerto Rican. I know that Argentinians have a slightly unique set of vocabs and pronounce their ll/y like zh, and PRs tend to drop the "S", and "RR" is sound like a Spanish "J"

What Latin American country speak the clearest and most accurate Spanish language ?

a) Mexico
b) Costa Rica
c) Chile
d) Colombia
e.... that's it. ( no more options, other countries speak Spanish from the 16th century using understandable accents )

Which of these counries speak Spanish as a dominant language?

Australia, Austria, Belgium, Brazil, Canada, China, Costa Rica, Denmark, Finland, France, Germany, Greece, Hong Kong, Ireland, Italy, Japan, Mexico, Netherlands, Norway, New Zealand, South Africa, Spain, Sweden, Switzerland, Portugal, England, USA.

I'd like to know which countries speak Spanish as their dominant language. Thank you!