Great map of Doggerland, a landmass that is now northern Europe and the North Sea. People once lived here, before sea level rose. From National Geographic.
Alliances were a large part of World War One. The Triple Alliances consisted of Germany, Austria- Hungary and Italy. Another alliance group was the Triple Entente which consisted of Britain, France and Russia.
Percentage map of blue eyes in Europe. Read that blue eyes evolved about years ago.