Complex sentence: In 1818, Fuller built the Observatory at Brightling which had been designed by Sir Robert Smirke, and in 1822, he endowed Eastbourne in Sussex with its first lifeboat.
Split into simpler sentences: In 1818, Fuller built the Observatory at Brightling which had been designed by Sir Robert Smirke. In 1822, he endowed Eastbourne in Sussex with its first lifeboat.