Which sentence below shows correct use of em dashes? She will one day inherit this kingdom—the one on the map—to rule as her own
. She will one—day inherit this kingdom the one on the map—to rule as her own. She will one day inherit—this kingdom—the one on the map to rule as her own. She will one day inherit this—kingdom—the one on the map to rule as her own.
The first one is the correct way to use it, since it separates the parts of the sentence into fragments that can still be understood without changing the meaning of the entire sentence.
