Final answer:
The purpose of Johnson's article is to persuade the readers, and he employs various persuasive techniques to achieve this.
Step-by-step explanation:
The purpose of Johnson's article can be identified as persuasion. In the text, Johnson addresses the American people under the guise of a graduation address, which suggests that he aims to influence and encourage his audience. He ends the article by urging readers to make the vision of the country's founders their reality, further emphasizing his persuasive intent.
Johnson's use of rhetorical techniques, such as appealing to the audience's emotions, employing sensory details, and referencing the country's history, supports his persuasive purpose. By using descriptive diction and connecting to the readers' values and aspirations, Johnson effectively seeks to convince them of his viewpoint.
Overall, Johnson's purpose in this article is primarily to persuade the readers to adopt his perspective and take action.