Complex sentence: Three of his sons ascended the throne successively as Ramesses IV, Rameses VI and Rameses VIII. Egypt was increasingly beset by droughts, below-normal flooding of the Nile, famine, civil unrest and official corruption.
Split into simpler sentences: Three of his sons would go on to assume power as Ramesses IV, Rameses VI and Rameses VIII, respectively. However, at this time Egypt was also increasingly beset by a series of droughts, below-normal flooding of the Nile, famine, civil unrest and official corruption.