What did Montezuma discover

The right of the people to express their political views is protected in our govemment in many ways, including

How do economists measure the success, or shortcomings, of the economy?

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?