Can you explain this poem? Thoroughly? (Maya Angelou)?

Question

These Yet To Be United States
Tremors of your network
cause kings to disappear.
Your open mouth in anger
makes nations bow in fear.
Your bombs can change the seasons,
obliterate the spring.
What more do you long for ?
Why are you suffering ?
You control the human lives
in Rome and Timbuktu.
Lonely nomads wandering
owe Telstar to you.
Seas shift at your bidding,
your mushrooms fill the sky.
Why are you unhappy ?
Why do your children cry?
They kneel alone in terror
with dread in every glance.
Their nights are threatened daily
by a grim inheritance.
You dwell in whitened castles
with deep and poisoned moats
and cannot hear the curses
which fill your children's throats.

Answer 1

This poem is talking to the powers that be within the United States addressing the state of this nation as not yet filled the claim of being united. There are those whom cause enemies out of allies and cause other countries to fear opposition and see revelations of greed and obesity stemming from a country that seems to be so faired off that it should have the utmost conduct which should exceed any nation it leaves in the trail. Complaints and unhappiness is vain in nature. Other nations begin to wash their hands from sympathy. The people of the United States are left with inheritance of the burdens and not the present powers and eventually all be it wealthy, poor, middle-class, or immigrant will emerge as descendants which points the fingers at those times.

Answer 2

Is this an homework? :)