Fernández-Villaverde, Jesús; Koyama, Mark; Lin, Youhong; … - 2022
. Differences in land productivity, in particular the existence of a core region of high land productivity in northern China, also … argued that “fractured land” was responsible for China’s tendency toward political unification and Europe’s protracted … find that topography alone is sufficient, but not necessary, to explain polycentrism in Europe and unification in China …