Simplify the following text for a Grade 10 native English-speaking person.
Original: The term `` nation-state '' implies that the two geographically coincide , and this distinguishes the nation-state from the other types of state , which historically preceded it .
Simplified: The term `` nation-state '' means that the two are on the same territorium , and this distinguishes the nation state from the other types of state , which existed before .