Complex sentence: Lenape and Wyandot Indians surprised a European American settlement at the edge of the flood plain, or "bottom" land of the Muskingum River; they stormed the blockhouse and killed eleven men, one woman, and two children.
Split into simpler sentences: Lenape and Wyandot warriors raided a European American settlement at the edge of the flood plain, or "bottom" land, of the Muskingum River. They stormed the blockhouse and killed eleven men, one woman, and two children.