5 different types of crisis

Identify at minimum of 5 different types of crisis. Determine if it is natural or man-made.
Analyze potential risks for each crisis you identify. Provide a “real” example of the crisis.
Crisis Natural or Man-made Potential Risk Example
Example:
Financial crisis Man-made Loss of investment
Damage to reputation
Legal action Ponzi Scheme.
Bernie Madoff executed the largest Ponzi scheme by defrauding thousands of investors out of billions of dollars.