How can you stop police brutality?

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 is federalism? what is federalism

4. what were some of the losses suffered by germany as a result of the treat of versailles?