Question

How does imagery help evoke emotion in this poem

Yes! in the sea of life enisled,
With echoing straits between us thrown,
Dotting the shoreless watery wild,
We mortal millions live alone.
The islands feel the enclasping flow,
And then their endless bounds they know.

But when the moon their hollows lights,
And they are swept by balms of spring,
And in their glens, on starry nights,
The nightingales divinely sing;
And lovely notes, from shore to shore,
Across the sounds and channels pour—

Oh! then a longing like despair
Is to their farthest caverns sent;
For surely once, they feel, we were
Parts of a single continent!
Now round us spreads the watery plain—
Oh might our marges meet again!

Who order'd, that their longing's fire
Should be, as soon as kindled, cool'd?
Who renders vain their deep desire?—
A God, a God their severance ruled!
And bade betwixt their shores to be
The unplumb'd, salt, estranging sea.

Answer 1

Do you know what imagery is? What images are evoked by this poem? What is the point made by the poet? How does his/her use of images make the point?
http://www.poetryarchive.org/glossary/imagery