Question 25-28 are based on the following passage. 

    In 1775, James Adair published history of the American Indians, a work that historians have quoted as an insight into the characteristics of eighteenth-century Cherokee society. Residing with the Cherokee for over forty years, the British Adair was considered an expert on the subject. However, his depiction of events has lead to a false conclusion, a fault made by those who were not accurately pinpointing the time Me at which his observations were made.

   Adair noted that the Cherokee were settling in towns with some distance between each other because the land will not admit any other settlement? The conclusion drawn from this statement was that the deterioration of the Cherokee society was caused by a depletion of resources such as crops, acreage, and wildlife.

   However, new findings suggest that It  was outside stressors, such as warfare, that lead to the collapse. What, then, of Adair's assertion? A recent study noted that because Adair chronicled his experiences over a forty-year period, his quote could have referred to any interval within that span, not necessarily the final stage of the society. Furthermore, after carefully examining cartographical data, which depicted an abundance of land, anthropologists determined that the Cherokee society must have flourished until the French and Indian wars added unexpected pressure and also usurped precious time that could have been spent farming. 

The author of the passage refers to the French and Indian wars in the final sentence in order to ....