How does dividing land into regions make geography easier to study?

Why were so many distinctive cultures able to develop over time in asia?

Your point of view - why is it important to remember the holocaust event in history?

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?