World War I
- Through out WW1 Albert Einstein was pacifist. He didn't want involvment in the war.
- Albert Einstein signs anti-war "Manifesto to Europeans." The "Manifesto to Europeans" was to protest Germany's militarisim and aggresion in WW1.
- Terrified by WW1, he offered the "two percent" plan. The two percent was that nations would be unable to carry on war if one in 50 men refused to serve in military.
- He supported anti-war movements in whatever ways he could.
World War II
- He wrote a letter to President Roosevelt urging him to develop fission weapons before the Germans. and he also signed a letter to President Roosevelt to support American research into "extremely powerful bombs of a new type."
- The letter signed by Albert Einstein awakened the president to start with "The Manhattan Project." The Manhattan Project was the first to create nuclear weapons, and generate atomic bombs during WW1.
- He thought that purifying uranium-235 (isotope of uranium with mass of 235; capable of sustaining chain reactions) could be useful to building/creating an atomic bomb.
- He sent a map to the president that showed where uranium in the United States was.
- Right after that idea the U.S Government began "The Manhattan Project" which could result of an atomic bomb.
- After the atomic bomb was used by the U.S on Japan, he greatly regretted his involvement and spent the rest of his life advocating for the abolition of nuclear weapons. He also spoke continually for the cause of peace and non violence.