Final answer:
Knox aimed to capture Washington's attention, communicate important information, and maintain confidentiality by sending this letter.
Step-by-step explanation:
Knox aimed to achieve several goals by sending this letter to George Washington. Firstly, Knox wanted to capture Washington's attention and make him aware of the situation at hand. By sending a fac-simile instead of seizing it openly, Knox may have hoped to create a sense of intrigue and curiosity in Washington, leading him to pay closer attention to the contents of the letter.
Additionally, Knox may have wanted to communicate important information or request Washington's assistance on a matter of national importance. The letter could have contained military or political intelligence, or it could have been a plea for additional resources or support.
Furthermore, sending the letter in this manner could have been a strategic move to ensure that the contents remained confidential. By avoiding a direct confrontation or seizure of the letter, Knox may have hoped to maintain secrecy and prevent potential leaks or countermeasures.