According to a different source, this question refers to the Farewell Address of George Washington. This is written in the form of a letter to the people of the United States.
In this letter, Washington warns the people of the dangers of becoming entangled in the affairs of other countries. One of the reasons he gives for this is the fact that becoming too close to certain countries might lead to excessive foreign influence and control. Another consequence of being interdependent with other countries is that forming a permanent alliance with a particular nation might alienate other ones. Finally, this interdependence can be positive when used to establish commercial relationships with other nations.