Are you Mexican if mother was born in Mexico and were not?

Not necessarily. Mexican nationality is determined by several factors, including place of birth, parentage, and naturalization. According to Mexican law, individuals born in Mexico are generally considered Mexican citizens, regardless of the nationality of their parents. On the other hand, being born outside of Mexico does not automatically confer Mexican citizenship unless specific conditions are met, such as having at least one Mexican parent or meeting certain legal requirements. Therefore, your nationality solely depends on the laws and regulations related to citizenship acquisition in both Mexico and the country where you were born. To establish or confirm your nationality accurately, it's advisable to consult the respective legal guidelines of both countries or connect with the competent authorities.