Complex sentence: Tallahatchie County is located in the Mississippi Delta region, divided by the Tallahatchie River which runs from north to south through the county before joining what becomes the Yazoo River in LeFlore County.
Split into simpler sentences: Tallahatchie County is located in the Mississippi Delta region. It is divided by the Tallahatchie River, which runs from north to south through the county before joining what becomes the Yazoo River in LeFlore County.