How is it that from all of South America, only Brazil is home to many blacks?

Brazil became the possession of Portugal, which had colonies in Africa and from there imported many black slaves into Brazil. All other parts of South America became the possessions of Spain, which had no colonies in Africa.

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.