Answer:
1. Camels help to provide a way of transportation to the people in West Africa. They traveled on them mostly through the desert. Since a camel does not drink a lot of water, the people were able to go from civilization to civilizations to trade.
2. China and Japan did not want anything to do with the problems that were happening in the world. Some of these included war and poverty. They wanted to have time to focus on themselves. They did not want to be forced to trade with other countries.
3. With Japan, the isolation helped their economy. This was because they were able to have a long period of stability and peace. The isolation in China also helped them. It allowed them to develop their own way. They were also able to form a different culture than that of the rest of the world.
Step-by-step explanation: