Knowledge Tree
Relations (1)
cross_type 0.10 — supporting 1 fact
Hemp is related to North America because the region has a historical record of hemp cultivation, which was subsequently banned there in 1938 as described in [1].
Facts (1)
Sources
A critical review of industrial fiber hemp anatomy, agronomic ... bioresources.cnr.ncsu.edu 1 fact
accountHemp cultivation was banned in North America in 1938, following a period where it was grown for making clothes, sails, and ropes.