Complex sentence: The products of the Italian workshops are also known as Arretine ware, and have been collected and admired since the Renaissance, while those of the Gaulish factories are referred to by English archaeologists as'samian ware'.
Split into simpler sentences: The products of the Italian workshops are also known as Arretine ware, and have been collected and admired since the Renaissance. The wares made in the Gaulish factories are often referred to by English-speaking archaeologists as'samian ware'.