Question

@meisen We don't have enough information from the passage to determine what MOST historians did at the time. We just know there was a mainstream US historian tendency for this kind of nationalism. We can't go so far as to extrapolate that this was most historians at the period.

mainstream means prevailing, hence "most."

need a better explanation of why C is wrong please

agreed

C seems more directly supported than A

The passage refers to American historians, while answer choice C talks about historians from any country, and how they portray their own countries