Final answer:
A rivalry between two superpowers can have both positive and negative effects on the world community. Competition can lead to advancements in fields like technology and science, but it can also cause conflicts and proxy wars, diverting resources from progress.
Step-by-step explanation:
A rivalry between two superpowers can have both positive and negative effects on the world community. On one hand, competition between superpowers can lead to advancements in different fields such as technology, science, and space exploration. For example, during the Cold War, the United States and the Soviet Union engaged in a race to achieve space milestones, which ultimately resulted in significant scientific progress. On the other hand, rivalries between superpowers can also lead to conflicts and proxy wars, as seen during the Cold War. These conflicts can cause suffering and division among nations, and divert resources and energy away from building a better future. It is important for superpowers to find ways to collaborate and cooperate for the benefit of the world community rather than solely focusing on competition.