Final answer:
In his farewell speech, George Washington warned against permanent alliances with any foreign nation and emphasized peace and harmony. He believed that involving the United States in European conflicts would be detrimental to its security and economic development.
Step-by-step explanation:
In his farewell speech, George Washington warned against permanent alliances with any foreign nation. He emphasized the importance of peace and harmony with all nations, and urged the United States to observe good faith and justice in its relations. Washington believed that getting involved in the conflicts and power struggles of European nations would be detrimental to the young nation's security and economic development.