the.com/heartland

means The central region of a country considered most representative of its traditional values, culture, and identity — geographically vague but symbolically loaded.

from A straightforward compound of 'heart' (the vital, central organ) and 'land,' first put to geopolitical use in the early 1900s — notably by British geographer Halford Mackinder, who used 'heartland' to name the Eurasian interior he considered the strategic pivot of world power. From that military-geographic sense, the word drifted into everyday political speech, where it lost its map coordinates and kept only its emotional ones: wherever a nation imagines its 'real' self to live.