Answer:
Victory of Hitler in attacking Poland encouraged him to attack Denmark and Norway. Later on he attacked Netherlands, Belgium and France. It is such that gave Germany the audacity to launch warfare on Great Britain. Hitler felt that the only way to make Britain surrender was to attack Soviet Union.
Step-by-step explanation:
The Great Depression also allowed authoritarian rulers to come to power, which moved the world closer to war. One major effect of World War II was the use of nuclear weapons in war, which would later lead to the Cold War.