Complex sentence: Nyuserre was the penultimate Egyptian pharaoh to build a sun temple, in doing he was following a tradition established by Userkaf reflecting the paramount importance of the cult of Ra during the Fifth Dynasty.
Split into simpler sentences: Nyuserre was the penultimate Egyptian pharaoh to build a sun temple. In doing so, he was following a tradition established by Userkaf which reflects the paramount importance of the cult of Ra during the Fifth Dynasty.