Both plates are folded into mountain ranges
The origin or the equator. depends on weither were talking actual math or on the map
All cultures share the same characteristics they are,learned,shared,based on symbols,interrogated,and dynamic
Europe is not a typically dry place (unlike for exampe Mesopotamia) so it does not need rivers for irrigation.
Instead, rivers are needed more for transport - they have served as a means of communication and for the exchange of goods.
For example, Danube allowed a big-scale trade between the cities lying on it: Vienna, Budapest and Bratislava.