Complex sentence: The term African art does not usually include the art of the North African areas along the Mediterranean coast, as such areas had long been part of different traditions and for more than a millennium had mostly formed part of Islamic art, although with many particular characteristics.
Split into simpler sentences: The term African art does not usually include the art of the North African areas along the Mediterranean coast, as such areas had long been part of different traditions. For more than a millenium, the art of such areas had formed part of Islamic art, although with many particular characteristics.