Washington's main concern in foreign policy was to maintain friendly trade while avoiding political alliances that could pull the United States into European conflicts that were not aligned with American interests, as ascertained from paragraph 8 and his Farewell Address.
Washington's main concern expressed in paragraph 8 seems to revolve around ensuring that the young United States maintained friendly trade relations with other nations without getting entangled in the European conflicts and wars.
His apprehension was that political alliances could unnecessarily drag the nation into these conflicts, which were deemed irrelevant to American interests.
This sentiment is further underscored in Washington's Farewell Address, where he distinguished between European interests and those of the United States, highlighting issues that were 'essentially foreign to our concerns'.
He also saw the resolution of frontier issues and the ability to navigate the Mississippi River as crucial to the nation's security and economic development.