Complex sentence: Beginning in 1921, an official UNIA delegation which included Robert Lincoln Poston and Henrietta Vinton Davis travelled to Liberia to survey potential landsites and the general condition of the country as an endpoint for UNIA members interested in living in Africa.
Split into simpler sentences: Beginning in 1921, an official UNIA delegation which included Robert Lincoln Poston and Henrietta Vinton Davis travelled to Liberia to survey potential landsites. They also assessed the general condition of the country from the standpoint of UNIA members interested in living in Africa.