1823年12月美国总统门罗正式向国会递交了一份国情咨文,其中有关外交方面的核心思想是:①美国反对今后欧洲任何列强再把美洲大陆已获得独立的国家,作为殖民对象;②美国反对欧洲列强把它们的政治制度扩展到西半球任何地区;③美国不干涉欧洲国家,也不干涉它们既存的殖民地与属地; In December 1823, President Monroe of the United States formally submitted a State of the Union address to the National Assembly. Among them, the core ideas related to diplomacy are: 1 The United States opposes any future European powers who have taken the American continent as an independent country; Oppose the European powers extending their political system to any region in the Western Hemisphere; 3 The United States does not interfere in European countries and does not interfere with their existing colonies and territories;