[mucker]

As many others have noted: 1.) The dataset implies that Europe is the most contentious area when it is more likely we just have the best historical records in Wikipedia 2.) The data set is dirty 3.) Because of (1) these are only going to be battles that Europe has found significant. The former Aztec Empire for example is evidently either the most peaceful in History or we just don't know a lot about all the tribes it has massacred in the format that Wikipedia likes.

At the very least he "every" in the title should be dropped. I'd suggest "Historically Significant Battles from a Western Perspective on Wikipedia"