Explain 2 reasons the african immigrants differed from the other groups

Explanation:  

1. African immigrants differed from the other groups because of their ethnicity, which was and still persists in some places to be considered inferior to the other races and this was the main reason why the scourge of slavery occurred.

2. They did not have economic resources as used to happen with other immigrants since they had more obstacles to obtain them because of the multiple discriminatory impositions on the part of the white people.

i think it is the byzantine empire