Complex sentence: Oglethorpe disagreed with slavery and thought a system of smallholdings more appropriate than the large plantations common in the colonies to the north, however, land grants were not as large as most colonists would have preferred.
Split into simpler sentences: Oglethorpe disagreed with slavery and thought a system of smallholdings more appropriate than the large plantations common in the colonies to the north. However, land grants were not as large as most colonists would have preferred.