Complex sentence: An estimate in 1977 by Lowenthal and Clark indicated that during 1779 to 1834 the number of slaves exported totalled 172; most were taken to Antigua but 37 went to the Leeward and Windward islands and some to the southern US.
Split into simpler sentences: An estimate in 1977 by Lowenthal and Clark indicated that between 1779 and 1834, the number of slaves exported totalled 172. Most were taken to Antigua, but 37 went to the Leeward and Windward islands, and some went to the southern US.