Complex sentence: The National Historical Park was created to protect several historically significant locations in the Shenandoah Valley of Northern Virginia, notably the site of the American Civil War battle of Cedar Creek and the Belle Grove Plantation.
Split into simpler sentences: The National Historical Park was created to protect several historically significant locations in the Shenandoah Valley of Northern Virginia. Areas protected by the park include the site of the American Civil War battle of Cedar Creek and the Belle Grove Plantation.