France used to be in an alliance with the Turks against the Germans. Non ideological alliances are possible in Europe but only if the EU can be broken apart. Germany and Poland are both too big and too pro US for more independent voices like France to be heard.
It's not just Europeans who spread but also China's own failure under the Ming dynasty where China had the chance to preempt the European colonial era but missed this opportunity. But most currently ethnically European regions probably won't be majority European anyway in a hundred years from now
Nationalism used to be a lot stronger in Europe, and ironically while we usually hear about nationalism in the context of "white nationalism" or "fascism," in fact it actually weakens the concept of "white" identity which, not surprisingly, was historically mainly pushed by the US. This is because "white" identity is the only unifying identity among people of European descent in America, as such it became their default variation of tribalism, as against the much deeper, "blood and soil" national identities in Europe.
With the end of World War 2, this changed. Since the US was dominant, it was free to promote its own brand of identity in Europe. The term "white" was replaced with "Western" for political purposes, but has remained basically equivalent. This is what Russian thinkers often call "Atlanticism" - the spread of a common identity between the US and the countries of Western Europe after World War 2, and its coming together as a powerful block of closely connected interests in the form of NATO, G-7, EU, etc. Add to this countries like Japan and South Korea, which are essentially honorary satellites of the Western world, and you have your current incumbent ruling faction of the world.
So while your example about France allying with the Turks against Germany make sense historically, it must be understood in the context of what happened after - ie the whole sale suppression of nationalism in Europe by the leaders of "Atlanticism" and its subsequent replacement by a common Western identity. This is also why Russia spends so much time and effort cultivating right-wing nationalist groups in Europe - because only through such groups can it hope to weaken the Western block. In short, European nationalism is a threat to "Atlanticism"; but European liberalism supports it.
