After repeated urgings from Presidents Kennedy to Reagan to Bush, this city was finally made whole again in 1989.

- Berlin

Explanation:

'Berlin' was the city that was made complete again after the Berlin wall faced its fall in the year 1989. This wall built during the cold war by Germans in 1961 to geographically segregate the Eastern, as well as the western part of the city as they had a threat that the people may move away from towards East Berlin which was ruled by the Soviets at that time and West Berlin dominated by Allies. Thus, they hatched out this plan but its destruction reunited the isolated Berlin and gave it a complete form again.

answer; degradation ceremony;