Which is correct?
George Washington was the first president of the United States.
or
George Washington is the first president of the United States. (He will always be the first president of the United States and will always be true)
I have read from a book that the present tense is used in stating general "truths", like for example "The Pacific Ocean is the largest Ocean in the world." , "Harvey is my brother", "Antarctica is covered with ice."
and it sounds wrong to say "The Pacific Ocean was the largest Ocean in the world." or "Harvey was my brother", "Antarctica was covered with ice." Using "was" sounds like there have been changes.