Complex sentence: The capital district of Bogotá is nearly completely surrounded by Cundinamarca territory and was formed by carving up Cundinamarca; between this and other divisions, the present department of Cundinamarca is much smaller than the original state.
Split into simpler sentences: The capital district of Bogotá is nearly completely surrounded by Cundinamarca territory and was formed by carving up Cundinamarca. Because of this and other border changes, the present department of Cundinamarca is much smaller than the original state.