This is a must for aspiring authors, particularly in the scifi and fantasy genres. A detailed history of the world you will write in will save you a great deal of time in the long run.
Ideally this will include geography, meteorology, history (including mythology and religion) , zoology, botany, astronomy (esp. for scifi) and an analysis of all major political entities.
Once accomplished, you have a template from which you can create a fictional work. This is the canvas upon which you will create your masterpiece.
As a student of political science and history with a strong background in science and math, I am able to do this for you. Contact me at GHWright.firstname.lastname@example.org for a quote. See you out there.