"History" is a record of events that happened in the past. History may be personal and recent (what did you do at school yesterday?) or inclusive and based on long ago (how did humans spread throughout different locations around the world?) or anything in between those two extremes.
History is a link between the past and the present because people act now, in the present, based on lessons learned in the past, from history. You may have had a frightening experience with a strange dog at some point in your past, and as a result you may still be afraid of dogs. Humans discovered that fire was warm and felt good when it was cold, but learned that fire could hurt them and could destroy objects. The decisions individuals and groups make in the present reflect knowledge gained through history.