Original sentence: Chaldean Christians  (), or Chaldos or Kaldus or Kaldaniya are ethnically Chaldeans  adherents of the Chaldean Catholic Church, originally called The Church of Assyria and Mosul, which was that part of the Assyrian Church of the East which entered communion with the Catholic Church between the 16th and 18th centuries AD
Edited sentence: Chaldean Christians  (), or Chaldo-Assyrians, (not to be confused with the ancient Chaldeans) are ethnically Assyrian   adherents of the Chaldean Catholic Church, originally called The Church of Assyria and Mosul, which was that part of the Assyrian Church of the East which entered communion with the Catholic Church between the 16th and 18th centuries AD.Rome initially named this new diocese The Church of Assyria and Mosul in 1553 AD, and only some 128 years later, in 1681 AD, was this changed to The Chaldean Catholic Church, despite none of its adherents having hitherto used the name "Chaldean" to describe themselves or their church, or having originated in the region in the far south of Mesopotamia which had long ago once been Chaldea.The terms Chaldean and Chaldo-Assyrian are sometimes used to describe those Assyrians who broke from the Assyrian Church of the East between the 16th and 18th centuries AD, and entered communion with the Roman Catholic Church