Final answer:
The statement directs readers to a source for more information about President Washington's foreign policy accomplishments, specifically related to his actions on settling borderlands and dealing with British and Spanish governments.
Step-by-step explanation:
The statement "Foreign policy accomplishments of President Washington: Source: Miller Center. Show details" serves the purpose of directing the reader to a source for more information on President Washington's foreign policy accomplishments. This supports the reader in further examining the specific actions and diplomatic efforts taken by President Washington to address foreign policy challenges during his administration, including issues related to the settlement of the borderlands, interactions with the Indians, and relations with the British and Spanish governments.