Why would a poet choose to use a sonnet poem or a free verse poem?

A poet who wanted to convey several different ideas about American, some of which might even be contradictory, might choose to write a free verse piece rather than a sonnet because free verse poetry places very few limits or restrictions on how poets express themselves. For instance, since the poet would not have to adhere to a specific meter or rhyme scheme, he or she would be free to match the form of the poem to its subject matter, creating a sprawling and varied piece that mirrored the diverse range of ideas that the poem sought to express.

Explanation: Hope this helps:)

today we'd use social media to quickly spread a controversial idea, but in the eighteenth century, the printed pamphlet was highly effective. and thomas paine took full advantage of it. on january 9, 1776, when paine published his pamphlet, "common sense," he wanted to push the american people toward independence from britain. it ultimately ignite the american revolution. thomas paine argued that the monarchy was evil and should be rejected as a form of government. to underscore his point, he cited the bible to argue his case -- in judges 8: 22-23: "the israelites said to gideon, 'rule over us, you and your son and your ' gideon told them, 'i will not rule over you. the lord will rule over you'" (nrsv).