What social and political factors led to the population shifts of the early to mid-20th century?

How has immigration influence the food choices in many countries?

What river valley civilization in the plow

Drugs have a high potential for abuse. there is no routine therapeutic use for these drugs and they are not available for regular use. they may be obtained for “investigational use only” by applying to the u.s. drug enforcement agency. examples include heroin and lsd. which scheduled drug is this?