Mexico is the most populous Spanish-speaking country in the world. It is also the second most populous country in Latin America (after Brazil). 60% of Mexicans have Native American and European forefathers; these are called mestizos. Almost 30% of Mexicans are pure Native American and 10% are European. Most Mexicans (90%) speak Spanish. 10% of the Mexicans speak a Native American language, like Nahuatl, the language of the Aztecs, Maya or Zapotec. Non-indigenous ethnic groups in Mexico speak another foreign language such as Romani, Arabic or Japanese. Most people in Mexico are Catholic (89%) and 6% are Protestant. Other ethnic groups in Mexico are Arabs, Gypsies, Africans, Jews and Asians.