he discovers the connection between mass and energy.
he made the......
Albert Einstein made the theory of light and relativity. Albert Einstein is one of the smartest man alive he invented lots of things in life and he would never give up no matter what.
The genius of german.
Albert Einstein was born in germany he was a very smart guy and the reason he is smart is because he would only learn what he wanted to learn in school not what the teachers wanted to teach him he is smart because of that.