One of Lincoln's major contribution while in office was the Emancipation Proclamation. This began the process of freedom for America's black slaves.
ggg
he is nice
william H TAFT
The War on Poverty and the Civil Rights Act of 1964
You must clarify the question. Which George Bush - there were two of them who were both president.
He is remembered for being a civil war general. His presidency is insignificant.
Calvin Coolidge
Penicillin was discovered and the Tea Pot Dome Scandal
No. He lived almost four years after he left office.
Washington was the first President of the US. The whole idea of electing a chief executive for a fixed term with clearly delimited powers was a truly radical concept. Washington created the role of President, defined the office and made it work. After 8 years, he happily yielded power to the new President. Such was his biggest contribution in office.
No. Coolidge ascended to office in 1923, while WWI ended in 1918.