White people (also called Caucasian) is a term which usually refers to human beings characterized, at least in part, by the light pigmentation of their skin. Rather than a straightforward description of skin color, the term white denotes a specific set of ethnic groups and functions as a color metaphor for race.
One common definition of a "white person" is a person of primarily European ancestry. However, the definition of a "white person" differs according to geographical and historical context, and various social constructions of whiteness have had implications in terms of national identity, consanguinity, public policy, religion, population statistics, racial segregation, affirmative action, eugenics, racial marginalization and racial quotas. The concept has been applied with varying degrees of formality and internal consistency in disciplines including: sociology, politics, genetics, biology, medicine, biomedicine, language, culture, and law.
White Mexicans are an estimated 17% of Mexico's population, i.e. around or 19 million people. The majority of them are of Spanish descent. However, many other non-Iberian immigrants (mostly French) also arrived during the Second Mexican Empire in the 1860s. During the late nineteenth and early twentieth centuries, immigrants from Italy, Germany, Ireland, the United Kingdom, Lebanon and Palestine also made Mexico their home.
In the 20th century, White Americans, Canadians, Greeks, Romanians, Portuguese, Armenians, Poles, Russians, Ashkenazi Jews, and immigrants from other Eastern European countries, along with many Spanish refugees fleeing the Spanish Civil War, also settled in Mexico.
The northern regions of Mexico, such as the states of Sonora, Chihuahua and Nuevo Leon, and particularly the city of Monterrey, hold the greatest European genetic admixture, with roughly 50-61% European admixture among the regional population.
The only time that the Mexican Government has asked Mexicans about their perception of their own racial heritage was in the 1921 census. 10% of the population answered that they were white. The Distrito Federal, in the Mexico City area, had the largest total of whites (206,514 of the 1.4 million nationwide), followed by Chihuahua (145,926), Sonora (115,151), Veracruz (114,150), and Mexico state (88,660), while in terms of percentage, the white population was most prominent in Sonora (41.85%), Chihuahua (36.33%), Baja California Sur (33.40%), Tabasco (27.56%), and Distrito Federal (22.79%).