I am reviewing the controversial [[New Imperialism]] article.
One side note is that Tarquin changed 9,000,000 square miles to 23,000,000 square kilometers. This move was apparently uncontroversial.
Is that right? As an American, I frankly confess that the metric system is a curiosity to me. 9,000,000 square miles, I can grasp, because I know how long a mile is intuitively. The kilometer, on the other hand, is non-intuitive, just an arbitrary length from a textbook.
Shouldn't we give both, then?