YU020101.
Figure 6. Topography and Drainage Systems
Varied and often breathtaking, Yugoslavia's landscape allows outside access to the country from virtually every direction, but it seriously hampers internal movement from one region to the next. Throughout history, Yugoslavia's topography has exposed the country to foreign invaders, frustrated internal commerce and political cohesion, and preserved the extraordinarily complex ethnic mosaic created by successive invasions and migrations. The ruggedness of their terrain is one reason Yugoslavs have often won renown as soldiers but seldom as merchants.
Data as of December 1990