The United States is said to have an absolute advantage in producing food compared with Japan. What does that mean?
It must import most of its food from Japan.
It produces food more efficiently than Japan.
It produces food at a higher cost than Japan.
Ko It must export most of its food to Japan.

The correct answer is a. when they started making tools that will them in cultivating lands, they could raise crops and that made them attached to one place for a longer period of time. after that, they started domesticating animals and building their own permanent settlements that resemble the ones we have today.