Answer:
Scholars date the mosaic through digging the site for artifacts and through studying the art.
Step-by-step explanation:
The Mosaic art for the first time began in Mesopotamia, which later followed in Ancient Greece and Rome. Mosaics were with patterns and pictures became widespread in classical times. Mosaic art began to flourish during the Byzantine Empire in the 6th century until the 15th century. Churches and Mosque decorated with colorful mosaic on wall, ceiling and floors. Scholars define this form of art by studying the theme of the subject and digging up artifacts across the site. Some of the ancient mosaics include The Beauty of Durrës, sites of Pompeii, Villa Romana del Casale, etc.