Is eubacterium or archaebacterium older

Archaebacteria (or Archaea) are generally considered to be older than eubacteria (or Bacteria) in terms of evolutionary history. Archaea are believed to have diverged from a common ancestor with Bacteria over 3 billion years ago, making them some of the earliest life forms on Earth. While both groups have ancient origins, the distinction between them suggests that Archaea emerged first, with Eubacteria evolving later.