Complex sentence: During this time the'mulattoes' became even more powerful than the white slave traders, as they spoke both African and English languages, and sometimes mixed the two... a precursor to the Krio language of the Sierra Leone Krio people.
Split into simpler sentences: During this time the "mulattoes" became even more powerful than the white slave traders, as they spoke both African and English languages, and sometimes mixed the two. This mixture of languages was a precursor to the Krio language of the Sierra Leone Krio people.