centralization

noun

1. (British, English, Oxford, US, countable, uncountable)The act or process of centralizing, or the state of being centralized; the act or process of combining or reducing several parts into a whole

   “the centralization of power in the general government”

   “the centralization of commerce in a city”

   “V-Dem lists the characteristics of autocratization as deteriorations in freedom of expression, the decline of free and fair elections, and the centralization of authority.”