What is the reason for almost half of Brazilian mixed blood?

Brazil was once a colony of Portugal in history, and now the official language is Portuguese. Later, there were immigrants from Europe, Africa, Asia and other regions, and multi-ethnic cultures continued to merge, so Brazil's culture has multi-ethnic characteristics, which is also the main reason why there are more mixed-race children in this country.

1500 On April 22nd, the Portuguese colonist Cabral and his party landed in Brazil, visited the coastal areas for nine days, and then left Brazil with two death row inmates. These two death row prisoners combined with local Indians to form the earliest mixed-race in Brazil.

After centuries of racial integration, almost every Brazilian now has the blood of colored people in his veins. Although this statement seems exaggerated, it at least reflects the prevalence of mixed-race in Brazil.

From the actual situation, the proportion of mixed-race children in Brazil is on the rise, from 27% in 1950 to 37% in the early 1990s.

There are five kinds of hybrids in Brazil: one is a mulatto named Murato; The second is a hybrid of whites and Indians, known as Kabokolo; the third is a hybrid of blacks and Indians, known as cafuzos; the fourth is a hybrid of whites and Japanese, known as Ainoko; The fifth kind is a hybrid of white, black and Indian, called Jusala. ?