When WWII broke out on Sept. 1, 1939 with Germany's invasion of Poland, few could have expected the technological leaps that would occur over the next six years. The true lasting impact of the technological advances of the Second World War are seen in the ability to take commercial jets around the world, the ever-bigger cruise ships, and the massive skyscrapers seen in cities all over the globe. With peace came a new world of opportunity that lead to the Internet and much more.