The use of blank verse and enjambment intesifies the contemplative and meditative mood of the poem. Blank verse allows for freedom of form, enhancing the tone of the poem, which shifts from being hopeful to being hopeless.
The use of enjambment helps hold the reader’s interest across lines:
This techniques might have different purposes in this poem. For example, they might create an specific rhythm that makes the reader a bit lost throughout the poem. The reader might stop and start several times. On the other hand, they pull him/her form one line to the other by keeping up the momentum, what makes the reader mover faster in order to understand what is being read.
EXAMPLE To him<span> | who </span>in<span> | the </span>love<span> | of </span>Na<span>|ture </span>holds Commun<span>|ion </span>with<span> | her </span>vis<span>|ible </span>forms<span>, | she </span>speaks <span>A </span>var<span>|ious </span>lang<span>|uage; </span>for<span> | his </span>gay<span>|er </span><span>hours</span>
From the excerpt you posted it looks like the writer's primary purpose is to persuade the audience to share his point of view.
This can be seen in phrases like "it seems to me that the decision is easy", where he implies that he has enough knowledge to see something that the Township officials are not seeing.
