sentences:  At this meeting, Du Bois unsuccessfully tried to convince the NERL members present, Trotter and Wells-Barnett, that white Americans should be permitted to join the NERL.When his pleas went unheeded, Du Bois left the organization and joined the National Association for the Advancement of Colored People.With the continued growth of the NAACP, the NERL lost prominence and by 1921 most members had joined the NAACP.