where did tobacco spread after the columbian exchange Mapping Use Now and in 1500 Columbian Exchange - Chapter 22:

Others stay loyal to wraps because they already solve the problem efficiently

It doesnt burn stuff or tar

Specifically, we observed, in the NDB facility surveillance footage, staff occasionally circumventing controls pertaining to facility and vault access solely for the sake of convenience." Staff stored guns on top of vaults instead of inside them, left keys lying around, propped exterior doors open, didn't sign people in and out, and otherwise engaged in more sloppiness than you might expect of people who had already been caught with their pants down and were told to tighten things up

Thus, for those countries, we imputed APW costs by applying the average APW cost per capita of similar middle-income countries for which data were available