What are the similarities and differences between the formation of the Ottoman state, the state of Timur and the empire of Genghis Khan?

The similarity here is minimal, namely: the military unification of peoples with similar economic interests. The state of Chinggis united the steppe cattle breeders, the state of Timur – urban, merchants and artisans. The Ottoman Empire artificially united two immiscible estates: warriors (masters) and ploughmen (disenfranchised subjects).

Remember: The process of learning a person lasts a lifetime. The value of the same knowledge for different people may be different, it is determined by their individual characteristics and needs. Therefore, knowledge is always needed at any age and position.