> and plausibly similar changes occurred in other regions
Sure. But did ALL regions change? And did they change to the same destination? When the environments differed so much? It is easy to see how answers (or the questions themselves) could be politically contentious.
Sure. But did ALL regions change? And did they change to the same destination? When the environments differed so much? It is easy to see how answers (or the questions themselves) could be politically contentious.