Question

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.

Answer 1

"A country can make and sell goods affordably and buy goods that it is inefficient at making."

Specialization is based on comparative advantage: countries focus on producing goods they can make at lower opportunity cost, sell those, and trade to obtain goods they produce less efficiently. This raises overall output and consumption for all trading partners.