Question

how can we learn history in such a interesting way that we don't forget it after time

Answer 1

best way to learn history is through imagining it as a story and enjoy it then only you will be interested in it and you will never forget as you don't forget any serials or films because they are also stories.

Answer 2

first imagine the story while reading book and go through the pictures in the book.
And keep the notes and writes important discoveries and dates in it