Having too many languages, too many different customs, too many citizens isolated from other demographics of citizens is what leads to things that allowed European Empires to divide, bribe, and defeat civilizations in Asia and arabia.

That is an interesting take on something that never happened.

First, every large successful empire was always multi ethnic, multilingual, multicultural. Roman, several Persian ones, Mongol, Moghul in India.

More than division and bribes, Europeans' ability to fight a high technology war is what defeated the Asians. Muslims may have started the "gunpowder empires" but post-renaissance, Europeans took warfare to entirely new heights. Division and bribes came later, to manage the populations they needed to loot and exploit effectively. That is definitely not a European invention. Chanakya predated Machiavelli by 2000 years and advocated the same tactics to keep unruly satraps in check. I am sure so did the Romans and Persians. If anything it lengthened the longevity of their empires.