Their power of curing snake bites is associated with a historic fact.

So there is no any loophole to question the authenticity of this historic fact.

Use of symbolic ritual as a statement of historic fact.

However, the main historic fact for which the village is known occurred possibly in 1011.

It would teach them the historic fact that the artificial is, if anything, older than the natural.

One does not have to believe in God to recognize this historic fact.

This statement is groundless, and contrary to known historic facts.

Thus, there are several untrue historic "facts" used in setting of the novel.

Previous chemotherapy or radiation exposure is an important historic fact.

These are the historic facts of human development (see Medieval Europe for example).