Editing Border (section)

=== Landscape borders ===
A landscape border is a mixture of political and natural borders. One example is the defensive forest created by China's [[Song dynasty]] in the eleventh century.<ref>{{Cite journal |last=Chen |first=Yuan Julian |title=Frontier, Fortification, and Forestation: Defensive Woodland on the Song–Liao Border in the Long Eleventh Century |date=July 2018 |journal=[[Journal of Chinese History]] |language=en |volume=2 |issue=2 |pages=313–334 |doi=10.1017/jch.2018.7 |issn=2059-1632 |doi-access=free}}</ref> Such a border is political in the sense that it is human-demarcated, usually through a [[treaty]]. However, a landscape border is not demarcated by fences and walls but instead landscape features such as forests, mountains, and water bodies. It is different from a natural border, however, in the sense that the border landscape is not natural but human-engineered. Such a landscape usually differs from the borderland's natural geography and its building requires tremendous human labour and financial investment.