Simplify the following text for a Grade 6 native English-speaking person.
Original: He converted to Islam during a visit to West Africa in the late 1940s and took the name Abdullah Ibn Buhaina ( which led to the nickname `` Bu '' ) .
Simplified: He converted to Islam during a visit to West Africa in the late 1940s and took the name Abdullah Ibn Buhaina . ( He had the nickname `` Bu '' ) .