That is correct! Topic sentences in an essay play a crucial role in creating unity. They act as mini-thesis statements for each paragraph and help guide the overall argument or flow of ideas in the essay. The main purpose of a topic sentence is to relate back to the main idea introduced in the essay's introduction or thesis statement. By doing so, topic sentences ensure that each paragraph in the essay is focused on a specific aspect of the overall argument, which helps to maintain coherence and unity throughout the essay. So, when the topic sentences in an essay relate to the main idea from the introduction or thesis statement, they contribute to creating a sense of unity and cohesion in the writing.
