Answer:
There's many answers to this but, a very straightforward one would be: In a capitalist country, like the US, money gives you virtually anything, like status, and having a status can make people afraid of you, makes them respect you and value you as well as your opinions more. With that, when others are afraid of you, it gives you power to control. When you have control you also have power
So basically, money gives control, control = power