Question

If these days are so tragic, why do we remember and learn about
them?

Answer 1

To learn how our world was created.

Step-by-step explanation:

It helps us experience what other people went through to get us where we are today. And also helps us understand what got us here and what made this place we live in what it is.

Answer 2

They are moments in our life when we either realize something, find something tragic or life changing, or a lesson may be taught:)