Final answer:
Flash flooding has accounted for the most flood-related deaths in recent history.
Step-by-step explanation:
In recent history, flash flooding has accounted for the most flood-related deaths.
Flash flooding occurs when there is a rapid and intense accumulation of water, often caused by heavy rainfall in a short period of time. This type of flooding can catch people off guard and is particularly dangerous because it can occur in urban areas where there is limited drainage.
An example of a flash flooding event that resulted in a high number of deaths is the 1998 flood in Bangladesh, where over 1,000 people lost their lives.