Canals cut the cost of transporting materials, improved railroads which helped the movement of heavy wagons, railroads linked manufacturing cities with different materials.
Japan has many mountains, thus, the outsiders could not easily enter Japan and Japanese could not leave the country. And, thus the self-isolation was helped by the presence of a mountain terrain. This policy was implemented by Togukawa, who insisted on preventing Japan from foreigners.
What are the answer choices
Answer: These tribes were commonly referred to as Barbarians.
Explanation:
