Question

How do you compare advantage, specialization, and trade all add to a nations ouput? And why are there different produced throughout the world?

Answer 1

Advantage, specialization and trade all adds to national output as, one country do trade with the commodity to whose production it has comparative advantage of production over the partner nation and that advantage comes through specialization in production through which, it's cost of production becomes cheaper than in other partner nations. Hence all three adds up to national output.

There are different produce through out the world because, every place has different geographic area, leading to difference in natural resources and different population of skilled labours leading to difference in human resources.