Mauretania (; ) is the Latin name for a region in the ancient Maghreb. It stretched from central present-day Algeria westwards to the Atlantic, covering northern present-day Morocco, and southward to the Atlas Mountains. Its native inhabitants of Berber ancestry, were known to the Romans as the Mauri and the Masaesyli. In 25 BC, the kings of Mauretania became Roman vassals until about 44 AD, when the area was annexed to Rome and divided into two provinces: Mauretania Tingitana and Mauretania Caesariensis. Christianity spread there from the 3rd century onwards. After the Muslim Arabs subdued the region in the 7th century, Islam became the dominant religion. Moorish kingdom Mauretania existed as a tribal kingdom of the Berber Mauri people. In the early 1st century Strabo recorded Maûroi (Μαῦροι in greek) as the native name of a people opposite the Iberian Peninsula. This appellation was adopted into Latin, whereas the Greek name for the tribe was Mauroúsii (Μαυρούσιοι). The Mediterranean coast of Mauretania had commercial harbours for trade with Carthage from before the 4th century BC, but the interior was controlled by Berber tribes, who had established themselves in the region by the Iron Age. King Atlas was a legendary king of Mauretania credited with inventing the celestial globe. The first known historical king of the Mauri, Baga, ruled during the Second Punic War of 218–201 BC. The Mauri were in close contact with Numidia. Bocchus I ([fl.] 110 BC) was father-in-law to the redoubted Numidian king Jugurtha. After the death of king Bocchus II in 33 BC Rome directly administered the region from 33 BC to 25 BC. Mauretania eventually became a client kingdom of the Roman Empire in 25 BC when the Romans installed Juba II of Numidia as their client-king. On his death in AD 23, his Roman-educated son Ptolemy of Mauretania succeeded him. The Emperor Caligula had Ptolemy executed in AD 40. The Roman Emperor Claudius annexed Mauretania directly as a Roman province in AD 44, placing it under an imperial governor (either a procurator Augusti, or a legatus Augusti pro praetore). Kings Roman province(s) In the 1st century AD, Emperor Claudius divided the Roman province of Mauretania into Mauretania Caesariensis and Mauretania Tingitana along the line of the Mulucha (Muluya) River, about 60 km west of modern Oran: Mauretania Tingitana was named after its capital Tingis (now Tangier); it corresponded to northern Morocco (including the current