Why cigarettes can make you lose control

How does specialization enable countries to trade with one another? a country can make and sell goods affordably and buy goods that it is inefficient at making. a country can make what it chooses and sell its goods to other countries. a country can decide to buy everything it needs from other countries. a country can efficiently make goods that were once difficult to make.

What was the social class pyramid during the civil war?

How much time on average do americans currently spend watching tv and videos per day?