Knowledge of history is needed so that we know various events and human experiences that occurred in the past. Basically, what is happening in the present is the result of a series of events from earlier times.

George Santayana, a writer from Spain said, "Those who don't study history will repeat history itself." Ir. Soekarno also reminded the Indonesian people not to forget history.

Compiling history should not be done haphazardly. Historians must be able to apply certain thinking concepts so that historical events can be studied systematically and thoroughly.