A historian would use a calendar when he is trying to find the dates of when the event occurred, such as the dates of a battle, natural disaster, or how long a type of government has ruled.
hope this helps
Answer:
Disease, war, and possibly weakened government
Explanation:
<span>India is located within both the Eastern Hemisphere, like the rest of Asia, and the Northern Hemisphere. India is considered part of the South Asia region.</span>
