Complex sentence: The linguistic accuracy of these writings has been questioned because of the authors' social backgrounds, but these works provide the best information we have on the Gullah language as it was spoken in its more conservative form during the 19th century.
Split into simpler sentences: The linguistic accuracy of these writings has been questioned because of the authors' social backgrounds. Nonetheless, these works provide the best available information on the Gullah language as it was spoken in its more conservative form during the 19th century.