Complex sentence: Around the time Zwide became Chief, the Ndwandwe were growing in military power and he was ambitious in expanding Ndwandwe supremacy and was a prominent rival chieftain to Chief Dingiswayo of the Mthethwa and his famous general and protégé, King Shaka of the Zulu Kingdom.
Split into simpler sentences: Around the time Zwide became Chief, the Ndwandwe were growing in military power. Ambitious in expanding Ndwandwe supremacy, Zwide was a prominent rival chieftain to Chief Dingiswayo of the Mthethwa and his famous general and protégé, King Shaka of the Zulu Kingdom.