The Ottoman Empire engaged in Genocide against Armenian Christians. The German empire, and it was a short lived Empire, not outlasting the war that created it, changed civilization, too, occasioning the metamorphosis of the Bolshevik staggering economy into the Stalin Soviet Empire that did, I believe, have some effect on the course of Western Civilization.
The Ottomans did a few things right (a lot of Sephardic Jews took refuge in the Ottoman Empire) but also did a lot wrong--murdering and enslaving people. The Armenian genocide is the best known but not their only genocide. I don't think many Greeks, Bulgarians or Serbs have fond memories of the centuries of Ottoman rule.