What portion of the world's proven oil deposits are located in southwest asia?

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.

American s often refer to a country that is not the u.s as a a( domestic), or b(foreign)

Is it true the ancient egyptians created a calendar that had 10 days in a week