Define the Tokaido corridor.

• A. A densely populated region along the Pacific coast of Honshu, connecting Tokyo and Osaka, known for its economic activity and urbanization
• B. A high-altitude plateau in central Honshu
• C. An ancient inland road network
• D. A northern island chain

Answer: (A)

The main idea is that the Tokaido corridor is Japan’s eastern economic spine along the Pacific coast of Honshu, linking Tokyo and Osaka. It’s a densely populated belt of urbanized areas with heavy economic activity, stretching along the coast and acting as a continuous flow of commerce and transportation. Historically tied to the Edo-period Tokaido road between Edo (Tokyo) and Kyoto, today it remains central to Japan’s economy thanks to modern transport like Shinkansen lines and highways that keep these coastal cities closely connected.

This isn’t a high-altitude plateau in central Honshu, nor an inland road network, nor a northern island chain. It’s defined by its coastal urban concentration and economic orientation along Honshu’s eastern shore.