Complex sentence: The Pioneer and Historical Society of Muskingum County, also known as the Zanesville Historical Society, is an organization located in Zanesville, Ohio, in the United States, with the mission of preserving the history of the Zanesville and Muskingum County region of Ohio.
Split into simpler sentences: The Pioneer and Historical Society of Muskingum County, also known as the Zanesville Historical Society, is an organization located in Zanesville, Ohio, in the United States. It is operated with the intention of preserving the history of the Zanesville and Muskingum County region of Ohio.