Objectivity of the world of history has little to do with the objectivity of the physical world, the actual existence of which happens to be an external attribute in relation to individual. Historical reality is an anthropic by definition which implies that human attitudes, representations, beliefs and even fantasy — all those things which may be described with the word “ideas” — become not only subjective rueful feelings, but under certain circumstances may become constructive factor of historical being. And if somebody takes a chance to list the most fundamental ideas that have reigned over the minds of people who featured all known societies within the entire history we know, then he/she will be get assured that the greater part of them had particular religious component. The latter sets specific requirements to history comprehension, since it is easier for researcher to understand scientific, political, philosophical concepts, alien to his/her time and culture, than alien religious forms.
Read the postON THE NATURE OF THE GODS, or “Epistemological Polytheism” as History Comprehension Method