The best response is:
They both were part of global movements that affected many around the world.
This response highlights that both the Vietnam War and the struggle for women's rights were significant events that not only impacted the United States but also had widespread implications globally. The Vietnam War influenced international relations, military strategies, and anti-war movements worldwide, while the fight for women's rights contributed to global discussions about gender equality, social justice, and human rights. Understanding these events through the lens of their interconnectedness helps us grasp the broader social, political, and cultural transformations that shape history.