Planning an essay on Prospero's power over Caliban in 'The Tempest'

Analysing language means looking at specific words in close detail and explaining their effect on the reader. An argument is where you present your idea about the text and convince the reader that it is correct. An essay plan should include a thesis statement which explains the overarching argument. Prospero treats Caliban cruelly through his language and actions. Arguably, Shakespeare may have been suggesting that the colonists' treatment of indigenous people was cruel.