how do you write an American Epic?

How do you write--American Epic
Direct (I think) though who can say?
Dickinson has the structure errect
While Whitman's pleas' neighs
with all bram of golden pleinades
and with, imagination's marmalade

My mawmaw--Eliot, you sneaky Devil
history books fail to cut the page
And as Ariel, via Plath's great sybil
sees the most blood on the stage
and with that--the audience shrieks
S'blood, still spilling in southern streets

How to write American Epic:
Lakotas and Dakotas stolen hence
the slaver's whip carried on ships
we got a nice trophy from France
but we cant --look it square the eye
we must dream rafters round--the colossal sty