@Rizwan Anwar

There was no need of saying don't laugh at me...

When someone starts writing essay and he don't include facts and figures then the credibility and factuality of the essay comes under question. For Essay that are abstract or are written in some Literary topics, you will not find dates and data because they address some other area of knowledge that is more connected to the expressing what one thoughts and feels, viz a poetic work, a drama, a book etc but when it comes to topics like one that you have mentioned, facts and figures are essential. This also gives the essay some due length required.

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Thanks & Regards
Faseeh