Because most of the famous people name their inventions by their last names or family names to be remembered for centuries and its called the rubiks cube because it was named by a guy rubik and its a...
The 4x4 rubik's cube or the Rubik's Revenge
He invented it in Hungary in 1774.
The first model of a "Rubik's Cube" was made entirely out of wood. It was made in Hungary as Erno Rubik was Hungarian. i can solve up to a 6x6 :)
For you to ask