[19] See page 13.
[20] See page 186, note 2.
[21] See page 48.
[22] See the illustration, page 46.
CHAPTER IV
THE LANDS OF THE WEST AND THE RISE OF GREECE TO ABOUT 500 B.C. [1]
20. PHYSICAL EUROPE
EUROPE A PENINSULA OF ASIA
The continent of Asia, projecting its huge bulk southwestward between the seas, gradually narrows into the smaller continent of Europe. The boundary between the two regions is not well defined. Ancient geographers found a convenient dividing line north of the Black Sea in the course of the river Don. Modern map makers usually place the division at the Ural Mountains, the Caspian Sea, and the Caucasus. Each of these boundaries is more or less arbitrary. In a geographical sense Europe is only the largest of the great Asiatic peninsulas.