Complex sentence: There is today a small town called Carthage, South Dakota, located where Laura placed the Brewster settlement, although it is unclear if Carthage grew out of the original Bouchie (Brewster) Settlement.
Split into simpler sentences: There is today a small town called Carthage, South Dakota, located exactly where Laura described the "Brewster Settlement" as being located. It is unclear however, if Carthage grew out of the original Bouchie (Brewster) Settlement.