What is representative democracy

What is the main goal of the world trade organization a. to fight enforce tariffs b. to fight against terrorism c. to encourage trade d. to regulate international investments

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 words in the preamble to the constitution reflect the principle of popular sovereignty