These 4 Adriatic Sea, Aegean Sea, Black Sea, Ionian Sea
Two ways in which the proximity to water has affected Western Europe's economy:
1) Proximity of water can lead to lack of food, which affects economy of the country in various ways.
2) It has wet cool summers and wet, mild winters, so for shelters and cloths, it affects economy by transportation, extra manufacture etc.
Hope this helps!
The Spanish Habsburg dynasty
by size, shape and composition?