Complex sentence: These include the contest "Miss Africa World" (1986-1991), which in 1987 became "Miss Africa International" and from 1991 to 1992 the contest "Miss Friendship", held in Bonn, Germany.
Split into simpler sentences: These include the contest "Miss Africa World", which in 1987 became "Miss Africa International". From 1991 to 1992 the contest "Miss Friendship" was held in Bonn, Germany.