Complex sentence: The existence of any community is closely associated with its history the only ancient record prior to the 16th century which may throw light upon the existence of the Knanaya Community is the so-called Knaithomman Chepped or Knaithomman Copper plates.
Split into simpler sentences: The existence of any community is closely associated with its history. The only ancient record prior to the 16th century which may throw light upon the existence of the Knanaya Community is the so-called Knaithomman Chepped or Knaithomman Copper plates.