Create a scenario with the latest possible POD such that the late 20th and early 21st century of this TL has no Western superpowers and is dominated by a non-Western nation or nations. Perhaps even a cold war between two competing non-Western superpowers, like a resurgent Ottoman Empire vs China.
The only way I can think about approaching this would be to prevent the rise of the US by splitting it into several independent countries right after the Revolutionary Wars. Then with perhaps China and/or the Ottoman Empire going through the right reforms and the European colonial empires weakening then collapsing from some World War(s), the modern world of this TL can be dominated primarily by China and/or the OE.
Later POD, even after 1900, would be welcome, but don't resort to nuclear war or Yellowstone Eruption or some other mega disaster along those lines.
The only way I can think about approaching this would be to prevent the rise of the US by splitting it into several independent countries right after the Revolutionary Wars. Then with perhaps China and/or the Ottoman Empire going through the right reforms and the European colonial empires weakening then collapsing from some World War(s), the modern world of this TL can be dominated primarily by China and/or the OE.
Later POD, even after 1900, would be welcome, but don't resort to nuclear war or Yellowstone Eruption or some other mega disaster along those lines.