On June 7, 1776, Richard Henry Lee introduced a motion in Congress to declare independence. Other members of Congress were amenable but thought some colonies not quite ready. However, Congress did form a committee to draft a declaration of independence and assigned this duty to Thomas Jefferson. I felt that this question was more of a opinion question but this is what I think.
Answer:
The Cold War was important because it split the world into two rival sides that came into conflict with each other in a number of places around the world. This conflict has left us with, among other things, a huge aresenal of nuclear weapons, particularly in the US and in Russia.