Simplify the following text for a Grade 6 native English-speaking person.
Original: It was formerly the center of Nundle Shire Local Government Area , but most of this area , including the village of Nundle , was absorbed into Tamworth Regional Council in 2004 .
Simplified: It was once the center of Nundle Shire . Most of this area , including the village of Nundle , was added to the new Tamworth Regional Council in 2004 .