Complex sentence: Extensive land recovery was undertaken in the Somerset Levels by land owners between 1770 and the end of the Napoleonic Wars in 1815, as part of a general scheme of agricultural improvements, including improvements to the Brue Valley and to King's Sedgemoor.
Split into simpler sentences: Extensive land recovery was undertaken in the Somerset Levels by land owners between 1770 and the end of the Napoleonic Wars in 1815, as part of a general scheme of agricultural improvements. This included improvements to the Brue Valley and to King's Sedgemoor.