what is the rhetorical effect of the following sentences from the passage

Our petitions have been slighted; our remonstrances have produced additional violence and insult; our supplications have been disregarded and we have been spurned, with contempt, from the foot of the throne!

The rhetorical effect of the following sentences is to emphasize a sense of frustration, anger, and injustice. The repetition of negative outcomes ("slighted," "produced additional violence and insult," "disregarded," "spurned with contempt") serves to heighten the emotional impact and convey a sense of helplessness. The use of strong language and imagery ("additional violence and insult," "spurned, with contempt") creates a vivid and impassioned tone, further engaging the reader's emotions and emphasizing the injustice and mistreatment experienced by the speaker.