Germany invaded Poland after years of illegally building their military in violation of the Treaty of Versailles under Adolf Hitler (History.com, 2009). Once Poland was invaded Great Britain and France both declared war on Germany. Even with the resistance of the Allied Powers, Germany then took over six more countries in three months, including Denmark, Norway, Belgium, Luxembourg, The Netherlands, and France (History.com, n.d.). Germany then went on to recruit Russia, Japan, and Italy to their cause and in turn created the Axis powers. Japan`s plans to expand their territory to the far east led to the attack on Pearl Harbor in December 1941. The United States of America had no choice but to declare war on Japan and officially join World War 2. By the beginning of 1942, all major countries of the world were a part of the most destructive and devastating war in …show more content…
The Manhattan Project was the United States attempt (with the support of Great Britain and Canada) to make the first nuclear weapon. They worked non-stop for four years under the direction of Major General Leslie Groves, however the more well-known scientist working on the Manhattan Project was Robert J. Oppenheimer ("father of the atomic bomb"). Oppenheimer was the director of the Los Alamos Laboratory that designed and created the nuclear bombs (History.com, n.d.). As the Manhattan Project’s success grew so did the budget. Once all was said and done the U.S. had spent nearly 2 billion dollars. The first real use of the bomb was on the Japanese city of Hiroshima. The effects of the bomb were like nothing the world had ever seen, nearly 150,000 people lost their lives in a matter of minutes. Nine days later Japan announced their surrender (History.com,