At the beginning of Act I, Caliban invitingly showed Prospero around the island and shared his home to the visitor, while Prospero shared knowledge of his language. Later, Shakespeare introduced conflict between them through confrontation, displaying a power struggle. Caliban realized he had been betrayed by Prospero by taking advantage of his kindness; this suggests colonization due to Prospero believing the island should be his due to feeling more “civilized” and having authority over Caliban, while Caliban believes the island should be rightfully his because he was there first. Caliban said, “This island’s mine, by Sycorax my mother, which thou takest from me,” which means it was passed down from his mother. He is a second generation civilian, but Prospero’s sense of superiority does not care. He reacts harshly calling him “filth,” and makes him a slave.