I would give some points for you to think and write your own essay..
1)Know history of things which make history.
2)Helps to know the developing times and improving situations.
3)Ease and comfort of this can be compared so as to take out a ratio of development factor.
4)History is in other way a knowledge source..hence everyone should know the history.
5)Science and its works,its improvements,problems and benefits can be understood by only havin a look back at history.