Many factors contributed to rising tensions between the rival superpowers during the Cold War. Tensions rose due to both words and deeds. Speeches made by world leaders, alliances formed between countries, and competition in the arms and space races all contributed to escalation of the Cold War. Luckily, the disintegration of the Soviet Union led to de–escalation, and the world avoided nuclear war.

What makes this an effective conclusion? Check all that apply.

It links the ending to the hook.
It includes a quotation.
It summarizes the main ideas.
It includes a proper MLA citation.
It restates the thesis.