Question

What is premature death?

Answer 1

Premature death is where a person dies younger than their nation's average life expectancy.

For example, the life expectancy in the United States is around 78.
The average person, in the United States, is expected to live until around 78 years.

If a person in the U.S. dies before they're 78 years old,
it means that they died "prematurely."