Complex sentence: In the 1st century AD, Calama, then part of the Roman province of Numidia, became a major urban centre, being given the rank of a Roman municipium as early as Hadrian, and of a colonia later.
Split into simpler sentences: In the 1st century AD, Calama, then part of the Roman province of Numidia, became a major urban centre. It was given the rank of a Roman municipium as early as Hadrian, and of a colonia later.