Why should history be studied?
Why do we study history so that we can learn the mistakes from the past to make the future better
so that we can learn from our ancestors
so that we should know how they made the discoveries that help us today
History class teaches you what happened in the past both in your primary culture and in others, helping you to understand why things are the way they are in the present day. Also, as is famously stated, "Those who do not learn from the past are doomed to repeat it."
"Not to know what took place before you were born is to remain forever a child" - Cicero