Complex sentence: In 1920 one of the African members of the Legislative Council, Joseph E. Casely-Hayford, convened the National Congress of British West Africa, which sent a delegation to London to urge the Colonial Office to consider the principle of elected representation.
Split into simpler sentences: In 1920 one of the African members of the Legislative Council, Joseph E. Casely-Hayford, convened the National Congress of British West Africa. The National Congress sent a delegation to London to urge the Colonial Office to consider the principle of elected representation.