For example, the author claims that Germany lost its chance to conquer Europe and the U.S. This is very misleading, and here's why.
Even though Germany rose to the Europe's most industrial and populous nation state following the unification of 1871, its production capacity was incomparable to that of the combined outputs of its western rivals. That is why Otto von Bismarck wanted the newly established Empire to stay out of any conflicts (and this is why he got fired by the more aggressive Wilhelm II).
The U.S. at that time was nobody. It was still undergoing the post-Civil War recovery and the Industrial Revolution JUST arrived on the continent. No European nation was interested in conquering the largely agrarian society.
Germany didn't miss a chance. It had neither the capacity nor the will to conquer the U.S.