They mummified people who had the money. :)
Metal is known to be the main thing that they believed to be used in order to achieve longevity. As per Chinese Alchemy, they believe that the use of gold and cinnabar is the main factor that can be used in order to acquire longevity once used.
Answer:
a letter written by a person who is describing a current event
Explanation:
A primary source is a document from the time period of the event.
While most of these could be considered one, you have to do a process of elimination.
A scholarly article about an old event isn't a primary source, so it's not that.
An interview with a reporter who wrote about a current event is not a primary source because it is not the original document from the reporter.
A student's report about an event that occurred during her lifetime is a primary source, but it is not the best example.
Depression ist the best answer, due to the "Great Depression" during the 1920's that stipulated your conditions