Final answer:
The truth of the statement about Chesterfield and Johnson cannot be verified without more context; it is unrelated to exercise 11.1.3. However, Jefferson's attempt at economic pressure was unsuccessful.
Step-by-step explanation:
The statement, "Chesterfield eventually got Johnson to change Johnson's opinion of Chesterfield," does not seem to directly relate to the provided reference materials from LibreTexts and Exercise 11.1.3, which pertains to Jefferson's economic strategies. Therefore, without additional context, it is not possible to verify the veracity of this claim. On the other hand, exercise 11.1.3 suggests a question regarding Jefferson's efforts, and considering historical events, the statement 'Jefferson's efforts to use economic pressure to solve the situation with Britain and France were successful' would generally be considered false. Jefferson's Embargo Act of 1807, meant to exert economic pressure on Britain and France, resulted in considerable economic hardship in the United States and was largely viewed as unsuccessful at the time.