American isolationism began with the Declaration of Neutrality and farewell speech issued by Washington, and its form is neutrality. 1793 June, the war between Britain and France broke out. Although the United States signed the treaty of alliance as early as June 1778, American President Washington issued the Declaration of Neutrality on April 22 1793, announcing that the warring parties would adopt a "friendly and just" policy and prohibit Americans from participating in any form. Three years later, on September 7th, 1796, Washington delivered a famous farewell speech, warning Americans: "The main code of conduct for us to deal with foreign countries is to have as little political relations with them as possible when expanding our commercial relations." He objected that "the fate of the United States is intertwined with the fate of any part of Europe, so that our peace and prosperity are caught in the net of European ambitions, interests, emotions or capriciousness." He believes that the correct policy of the United States is to "avoid a permanent alliance with any part of the foreign world." He also believes that the United States "can safely trust the temporary alliance to deal with very urgent events." But this last point has never been quoted by isolationists. This personal statement, not entirely written by Washington, has played a great role in American political life. From the diplomatic activities in the early days of the founding of the United States to the outbreak of World War II, Washington's legacy played an unexpected role in the question of whether the United States was involved. Whenever Congress debates on foreign policy, the ghost of Washington will come out to dominate the debate. In the 60 years before the Second World War, the Senate and the House of Representatives read aloud farewell speeches every day on Washington's birthday or the eve of this day to commemorate it. During 1793- 194 1 year, the meaning of American isolationism changed. The original isolationism had geographical factors: the United States and Europe were geographically separated by the ocean. By the end of 19 th century, the United States felt that painting land as a prison was not conducive to its own development. With the rapid development of monopoly organizations in American economic life, it is urgent to open up a broader overseas market. In the Spanish-American War of 1898, the United States expelled Spain from the western hemisphere and occupied the territory of the Philippines in Asia, thus beginning the process of crossing the ocean and getting rid of the original isolationism. 19 16 general election, Wilson solemnly proposed that Americans should remain neutral not only in action, but also in thought. Wilson's campaign team also put forward a catchy slogan: "He kept us out of the war." Wilson won re-election under this slogan. A few months later, he put the United States into war under the slogan of "saving democracy for the world". In the parliamentary election of 19 18, the * * party won, and isolationists took control of the parliament. This was the eve of Wilson's departure for Europe to attend the Paris Peace Conference on February 5 19 18. When Wilson 19 19 brought back the Covenant of the League of Nations, which he gambled with his whole political life, what was waiting for him in Congress was an anti-Wilson alliance-a strange combination of isolationism and a power balancer represented by old henry lodge, who was famous for being anti-British. Their argument is that the League of Nations advocated by Wilson contains mutual guarantee clauses, which makes it possible for European powers to interfere in the affairs of the Western Hemisphere, thus deviating from the Monroe Doctrine and violating Washington's warning to avoid being involved in alliances with other countries. Wilson's plan for the League of Nations was rejected by the Senate. After that, Wilson devoted his last energy to a national lecture tour to defend the League of Nations, expecting people to vote for the Democratic Party in the 1920 presidential election to show their support for the League of Nations plan. But this time, in the "solemn referendum" with high hopes, most voters abandoned his League of Nations and his political party. Shortly before his death, Wilson really realized that it was not only the Senate but also the American people who really rejected the Treaty of Versailles. He said to his family, "It is right for the United States not to join the League of Nations ... because the American people don't believe it at all." Despite Roosevelt's success in the Oval Office, there are still some lawmakers in Washington who are skeptical about the new owner of the White House. Although Hearst, the spokesman of isolationism, finally nodded and thought Roosevelt was qualified, many senior members still remember Wilson's entry into the White House 20 years ago. Wilson's conservative views were also investigated, but he dragged the United States into the war step by step. He even designed an international alliance to confront Washington's warning. Roosevelt inherited some of Wilson's dogmas, but his background, political experience and domestic and international environment were very different from Wilson's time. References:

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