The most significant issue facing the U. S. from 1991-2015

I'm not sure this is right, but i'll take a go at it. I think it is the rising conflict going on with iraq.

the completion of the erie canal spurred the first great westward movement of american settlers, gave access to the rich land and resources west of the appalachians and made new york the preeminent commercial city in the united states.

keeping a cash reserve because cash flow is the the movement of money through a company and if it just sits there, it wont the movement