What effect is achieved by the author's choice to begin the poem with this line?

The effect of setting up the mood of the poem was achieved by the poet by choosing to begin the poem by this line.

Explanation:

The line is a clear narrative of the background that is further followed throughout the poem. The line, right from the beginning, makes the reader imagine the setting in which the poem is taking place. By setting up the mood, the poet would be able to better engage the reader.