A History of Art for Beginners and Students Painting, Sculpture, Architecture by Clara Erskine Clement

We do not know how long the earth has existed, and in studying the most ancient times of which we have any accurate knowledge, we come upon facts which prove that men must have lived and died long before the dates of which we can speak exactly. The earliest nations of whose Architecture we can give an account are called heathen nations, and their art is called Ancient or Heathen Art, and this comes down to the time when the Roman Emperor Constantine was converted to Christianity, and changed the Roman Capitol from Rome to Constantinople in the year of our Lord 328.