Why do blacks have English last names?

Answer 1

If by "black", you are referring to African Americans, the reason is because they were originally removed from their native land by force and those who survived the criminally abusive trip across the Atlantic were "resettled" into a country where the dominant language was English. During slavery, surnames were not common as families were often split apart by slave trading. Once freed, slaves took English names because that is what everyone else had. They often took the surnames of former masters or of someone they admired. Since the Civil Rights Movement of the 60's many African Americans have adopted more African and Muslim names.

Answer 2

Many African Americans have English last names due to a legacy of slavery, where enslaved individuals were often given the last names of their owners. After emancipation, some individuals continued to use these last names as part of their identity, while others may have adopted different surnames for various reasons.