As ruler of the Hetmanate, Khmelnytsky engaged in state-building across multiple spheres: in the military, administration, finance, economics, and culture. He invested the Zaporozhian Host under the leadership of its hetman with supreme power in the new Ruthenian state, and he unified all the spheres of Ukrainian society under his authority. This would involve building a government system and a developed military and civilian administration out of Cossack officers and Ruthenian nobles, as well as the establishment of an elite within the Cossack Hetman state.