Succession is the act or process of following in order or sequence. Governance and politics. Order of succession, in politics, the ascension to power by one ruler, official, or monarch after the death, resignation, or removal from office of another, usually in a clearly defined order. Succession of states, in international relations, is the process of recognition and acceptance of a newly created state by other states, based on a perceived historical relationship the new state has with a prior state.
https://en.wikipedia.org/wiki/Succession