Explanation of the question.
Beowulf is an epic poem which is written by an Anglo Saxon poet meaning someone from Great Britain. So this poem Beowulf illustrates the values of the Saxons.
Similarly, Odyssey is another epic poem which focuses on the values of the Greek. This poem is about the Greek hero of Rome 'Odyssey' also referred to as Ulysses.
So according to the question, it wants to known just like Beowulf and Odyssey which focuses on the values of Saxons and Greek, is there an epic poem which demonstrates the values of America?
Well, there aren’t any poems as such. But if we look at the poems written by Langston Hughes such as ‘Let America be America again’, ‘I, too, am America’ then we will get to known how these poems depicts the America as a whole.