I was just reading a Prism article with a map of the US and associated data within each state and an associated color with each state. It occurs to me gnuplot could have something like that. A country / state plotting facility with predefined geographical figures. Instead of having data represent Euclidean coordinates, the data can simply map to an associated state or country. With the ASCII data features Ethan added, it could be
plot '-' with continent europe
'spain' '40K EUR'
'france' '27K EUR'
plot '-' with country unitedstates
Of course, it's a little dodgy when history is tossed in the mix. Maybe date options like "1874"? Not sure about that part of it.