Final answer:
The official form of address for an archbishop is "Most Reverend," reflecting the historical evolution of church hierarchy, particularly regarding the significance of the archbishop of Rome. In terms of political power, the highest form is recognized generally as the sovereign, who holds supreme authority.
Step-by-step explanation:
The official form of address for an archbishop is "Most Reverend." This form of address is commonly used in correspondence and when formally addressing an archbishop within the context of the Catholic Church. Historically, the significance of an archbishop has evolved, especially with the rise of the archbishop of Rome, who eventually became known as the pope. This term, pope, signifies the "father" of the church, underlining the familial and hierarchical structure within the religious institution.
Regarding the second question, the highest form of political power can be debated in the context of the structure of government or the philosophical concept of power. While the president might represent the highest executive officer in certain governmental systems, the concept of sovereign refers to the supreme authority in a state, often embodied in or exercised by a monarch, a sovereign state, or the people as a whole in a republic. Legitimacy is an essential element for political power, as it provides the rightful status and acceptance by the governed. However, in a general sense, the sovereign is recognized as the highest form of political power.