At base, there is an ethical justification for the dropping of the bomb on Hiroshima as the United States was ready to mount a full scale invasion of Japan from China.
However, the Japanese were not given adequate time to surrender and so the dropping of the bomb on Nagasaki was inexcusable.
D. It was a trade route that connected China with the West
Ice and snow covered most of the northern part of the world. The people made fires to keep warm and to cook, they hunted and gathered food, and used stone tools to mine, chop, and dig. They lived in caves to get out of the weather elements