The multiplication of descendants of Portuguese settlers also happened to a large degree through miscegenation with black and amerindian women. In fact, in colonial Brazil the Portuguese men competed for the women, because among the African slaves the female component was also a small minority. This explains why the Portuguese men left more descendants in Brazil than the Amerindian or African men did. The Indian and African women were "dominated" by the Portuguese men, preventing men of color to find partners with whom they could have children. Added to this, White people had a much better quality of life and therefore a lower mortality rate than the black and indigenous population. Then, even though the Portuguese migration during colonial Brazil was smaller (3.2 million Indians estimated at the beginning of colonization and 3.6 million Africans brought since then, compared to the descendants of the over 700,000 Portuguese immigrants) the "white" population (whose ancestry was predominantly Portuguese) was as large as the "non-white" population in the early 19th century, just before independence from Portugal. After independence from Portugal in 1822, around 1.7 million Portuguese immigrants settled in Brazil. Portuguese immigration into Brazil in the 19th and 20th centuries was marked by its concentration in the states of São Paulo and Rio de Janeiro. The immigrants opted mostly for urban centers. Portuguese women appeared with some regularity among immigrants, with percentage variation in different decades and regions of the country. However, even among the more recent influx of Portuguese immigrants at the turn of the 20th century, there were 319 men to each 100 women among them. The Portuguese were different from other immigrants in Brazil, like the Germans, or Italians who brought many women along with them (even though the proportion of men was higher in any immigrant community). Despite the small female proportion, Portuguese men married mainly Portuguese women. Female immigrants rarely married Brazilian men. In this context, the Portuguese had a rate of endogamy which was higher than any other European immigrant community, and behind only the Japanese among all immigrants. Even with Portuguese heritage, many Portuguese-Brazilians identify themselves as being simply Brazilians, since Portuguese culture was a dominant cultural influence in the formation of Brazil (like many British Americans in the United States, who will never describe themselves as of British extraction, but only as "Americans", since British culture was a dominant cultural influence in the formation of The United States). In 1872, there were 3.7 million Whites in Brazil (the vast majority of them of Portuguese ancestry), 4.1 million mixed-race people (mostly of Portuguese-African-Amerindian ancestry) and 1.9 million Blacks.