From my experience and observations, Africans tend to fit in fairly well.
I found the same to be true. Most Africans I’ve met were model immigrants; honest, hardworking, family oriented, and always advancing towards a new goal. Anyone who has ever been to college would have to agree that Africans are very serious students for the most part. I work with a few Nigerians and Ethiopians and they make me feel like a slacker. While I just have one job, most of them work at least two jobs and most are also working on post graduate degrees. I also find them to be generally more positive and upbeat than a lot of my American born coworkers.
I’ve noticed that as well. The Christian Africans in Toronto tend to start their own businesses within a couple of years of arrival, but the muslim immigrants from Somalia and Sudan have been a mixed bag- some do well, but far too many are a drain on our social services and a significant minority are sending money back to the warlords in their home country.