Answer:
- excellent harbors
- rich supplies of fish
- one of the chief articles of food
- most formidable navies
Step-by-step explanation:
To explain the impact that Japan’s geography has had in that country's evolution, the key elements from the passage are those that refer to the quality of the harbors and navies developed, as well as the abundance of fish, and not the diversity of the fish found there, nor the indenture of the coastline.