You can refer to the events of the past as history. You can also refer to the past events which concern a particular topic or place as its history.

History is a subject studied in schools, colleges, and universities that deals with events that have happened in the past.

A history is an account of events that have happened in the past.

If a person or a place has a history of something, it has been very common or has happened frequently in their past.

Someone's history is the set of facts that are known about their past.

If you say that an event, thing, or person is history, you mean that they are no longer important.

If you are telling someone about an event and say the rest is history, you mean that you do not need to tell them what happened next because everyone knows about it already.