It first started with the Pearl Harbor Attack and was officially announced by Roosevelt in the Quarantine Speech.
The United States first began developing nuclear weapons in 1939, during World War II, under the order of President Franklin Roosevelt. Motivation was the fear that US was engaged in a race with Nazi Germany to develop nuclear weapon. This project is best known as Manhattan Project.
Answer:
Economic problems and crisis led to rise of nationalism, especially among those countries that were not satisficed with the decision of Versailles Peace Conference.
They blamed governments for the unsuccessful economical policy and stressed out that only strong national policy can only bring welfare. That is how fascism started rising promising welfare and better life.
Explanation:
Fascism started rising first in Italy, but later spread across Europe. Its peak was reached in Germany in a form of Nazism.
This totalitarian regimes led to Europe to the biggest war the world has ever seen and devastation of Biblical proportion.
