Which statements show the causes that led to the decline of the Old Kingdom?

Is karma the same as destiny, in the sense that everything that happens to you is predetermined? do you believe that "what goes around comes around," and if so is this the same as karma? does everyone get what they deserve, in the end?

What river systems the worlds earliest known civilization develop ?

Even though the u.s. declared neutrality, who did most americans side with in wwi?