Calorie
(Calorie most specifically means the amount of energy needed to raise one gram of water by one degree celsius.)
*But in the context of nutrition, we use calorie to describe how much energy a food contains and can transfer to the body. For example, a banana has about 105 calories. The average human adult needs about 1800-2000 calories per day depending on size and activity level.
If I understand your question correctly, you want to know who the last (as of today) "white" president was of the US? It was George W. Bush, president until 2009.
