Complex sentence: They were reasonably prosperous, but eventually returned to England in 1826, one factor in their decision being a threatened lawsuit from neighbouring farmers, who claimed that Bentham's irrigation system was diverting the local water supply.
Split into simpler sentences: They were reasonably prosperous, but eventually returned to England in 1826. One factor in their decision was a threatened lawsuit from neighbouring farmers, who claimed that Bentham's irrigation system was diverting the local water supply.