Answer:
The placement of these five images depicting crucial moments in the late 20th century is justified by the chronological order of events, demonstrating a clear understanding of the fall of the Soviet Union and its satellite states. Firstly, the Détente image represents the period of eased tensions between the United States and the Soviet Union during the 1970s, laying the groundwork for future changes. Secondly, the Solidarity image symbolizes the rise of the independent trade union in Poland in 1980, which played a pivotal role in weakening the Eastern Bloc. The third image, the Velvet Revolution, signifies the non-violent transition of power in Czechoslovakia in 1989, further destabilizing the Soviet bloc. Fourthly, the Romanian Revolution image illustrates the violent overthrow of Nicolae Ceausescu's regime in December 1989, marking the end of communist rule in Romania. Finally, the Fall of the Berlin Wall image in November 1989 serves as a powerful symbol of the collapse of the Iron Curtain and the Soviet Union's declining influence in Europe.