There are limited amounts of resources in a general area. Some civilizations may not have the ability to produce resources that they need. That makes 2 routes:
1) cooperation: They can cooperate with another people group that lives in a different region and trade with them
2) conflict: They can attack/raid another people group in a different region for the resources
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Answer: There are quite a few reasons as to why he changed religion. One of the main ones was that his wife urged him to become a christian and her persistence eventually persuaded him.
Explanation:
The most destructive volcano is Mount tambora