@briannafaith,
That's pretty good. It was truly global in reach, and it affected all parts of the world as the US and the Soviet Union, the two superpowers of the world, sought to re-enforce and expand their spheres of influence throughout the world. That's why it was significant. There was also the threat that, if the two superpowers were to engage in direct hostilities and confrontation, a global nuclear war would break out.