People around the world developed in many different ways due to geography and physical resources. The culture of each group of people developed as their population grew and people interacted in different ways. Once a culture was stable, artistic expression became an important facet of their lives. Art was such an important medium that many cultures were identified by their art forms. Ancient cultures left behind no written records, but they are still identified by their cultural heritage in pottery and ceramics. These items are all that is left for archeologists to study in many cases. The cultural differences in art have combined in the teachings of the modern world to enhance and enrich the global society.