Use the physical map of Europe below to answer the following question:

A physical map of Europe showing its topography, or elevation. Areas shaded brown refer to highlands and mountains. Brown areas include most of Spain, southeastern France, northern and central Italy, Switzerland, Austria, Slovenia, Bosnia, Montenegro, Serbia, southeastern Germany, Czech Republic, Slovakia, Greece Turkey, parts of Romania, parts of Bulgaria, Iceland, Norway, and western Sweden. Green shaded areas refer to lowlands or plains. Green areas include western Portugal, coasts of Spain, most of France, United Kingdom, central and northern Germany, the western and eastern coasts of Italy, Poland, Hungary, Ukraine, parts of Romania, and parts of Bulgaria.
Creative Commons Attribution-Share Alike 3.0 Unported

In which of the following locations would you expect to find the highest population density per square mile?

The Italian coast
Central Spain
Western Russia
Northern Scandinavia