Hamburger or Beefburger?

Question

Why is it that the favorite american food Hamberger is called ham? It is clearly made out of cow witch is beef. If u know the answer plz help.

Answer 1

Science knows

Answer 2

I've heard that hamburger was first produced in Hamburg, Germany.  However, I don't know if this is true.

Answer 3

Neither! Meat is murder!