-
President Franklin D. Roosevelt signs Executive Order 9066, allowing the United States military to define areas as exclusionary zones and forced removal of resident "enemy aliens" from parts of the West. this made a controversial World War II policy with lasting consequences for Japanese Americans. -
The Manhattan Project was the code name for the American-led effort to develop a functional atomic weapon during World War II.
It was led by the United States with the support of the United Kingdom and Canada.It was started in response to fears that German scientists had been working on a weapon using nuclear technology since the 1930s -
The Pentagon, the USA's Headquarters of the Department of Defense in Virginia, is the world's largest office building. With over 603 869m² of total floor - three times the size of the floor space of the Empire State Building in New York.
s dedicated in Arlington, Virginia. -
The Jefferson Memorial in Washington, D.C. is dedicated on the 200th anniversary of Thomas Jefferson's birth by President Franklin D. Roosevelt. it was intended to represent the Age of Enlightenment and Jefferson as a philosopher and statesman. The statue is 19 feet tall and weighs five tons. -
On January, 4 1944 Ralph Bunche appointed 1st African American official in US State Department.As Secretary of State, he was the highest-ranking official of the Department. -
June 22, 1944 The G.I. Bill of Rights is signed into law, providing benefits to veterans. To provide services and benefits to the veterans of World War II. The act put higher education, job training, and home ownership within the reach of millions of World War II veterans. -
January, 20 1945 Franklin D. Roosevelt sworn-in for an unprecedented 4th term as US President.Roosevelt as President of the United States. This was the 40th inauguration and marked the commencement of the fourth and final term of Franklin D. Roosevelt as president. -
August 6, 1945 President Harry S. Truman gives the go-ahead for the use of the atomic bomb with the bombing of Hiroshima. Three days later, the second bomb is dropped on Nagasaki, Japan. -
By a vote of 65–7, the United States Senate approves the entry of the United States into the United Nations.The United Nations officially came into existence on October 24, 1945, after the United States, the Soviet Union, the United Kingdom, China, and France, as well as a majority of the other signatories, had ratified the United Nations Charter. -
June 14 1952 the keel is laid for the U.S. nuclear submarine USS Nautilus. -
May 25 1953, Nuclear testing at the Nevada Test Site, United States conducts its first and only nuclear artillery test.