The longest serving president was Franklin Delano Roosevelt who served 4 terms and a total of 12 years 1 month and 8 days as the president of the United States.n March 21, 1947 America passed the twenty-second amendment (Amendment XXII) to the United States Constitution and it was ratified by the requisite number of states on February 26, 1951 which limited the term any one person can serve as President.
The United States dropped atomic bombs on the Japanese cities of Hiroshima and Nagasaki in August 1945, during the final stage of the Second World War.The two bombings, which killed at least 129,000 people, remain the only use of nuclear weapons for warfare in history.he United States dropped atomic bombs on the Japanese cities of Hiroshima and Nagasaki in August 1945, during the final stage of the Second World War.
Wishing to bring the war to a swift end, American planes dropped atomic bombs on the Japanese cities of Hiroshima and Nagasaki in August 1945. Finally, Japan surrendered. VJ Day was celebrated on August 14, 1945 in the United States.To unlock this lesson you must be a Study.com Member.ishing to bring the war to a swift end, American planes dropped atomic bombs on the Japanese cities of Hiroshima and Nagasaki in August 1945. Finally, Japan surrendered. VJ Day was celebrated on August 14, 1945 in the United States. To unlock this lesson you must be a Study.com Member.