In that work using the terminology of the "World Island," this man termed key regions "The Heartland."
This man's "Imperial Vision" is described in a 2004 article by Brian Blouet, arguing that his travels in Africa to climb Mount Kenya were a turning point that pushed him away from market-based theories. Nick Megoran has noted his intense popularity among Uzbek intellectuals, while Li Narangoa argues Japanese involvement in Mongolian politics was motivated by study of this man's works. This man's most famous work referred to his age as "the end of a great historical epoch," termed the Colombian Age, to be followed by an era where control of Eastern Europe would become increasingly important. In that work using the terminology of the "World Island," this man termed key regions "The Heartland." Considered the founder of geopolitics, for 10 points, identify this British geographer, the author of "The Geographical Pivot of History."
This man's "Imperial Vision" is described in a 2004 article by Brian Blouet, arguing that his travels in Africa to climb Mount Kenya were a turning point that pushed him away from market-based theories.
Halford Mackinder