Simplify the following text for a Grade 7 native English-speaking person.
Original: Mansfield is the center of a large shire ; it was amalgamated with the nearby town of Benalla ( 60 km ) to form Delatite Shire but after community action became the first de-amalgamation in Victoria .
Simplified: Mansfield is the center of a large shire ; it was made to join with the nearby town of Benalla 60 k away , to form Delatite Shire . Many people did not like this change and Mansfield became the first de-amalgamation in Victoria .