1620: may flower docked at Cape Cod, Massachusetts (now known as Puerto Tam), instead of their intended destination, Virginia. Pilgrims also signed the so-called "Mayflower Contract". This is the first ruling document of separatists (also known as saints, pilgrims and Plymouth colonies), in which they agreed to unite and establish their own * * * organization in the United States. On that day, 465,438+0 people (including future leaders such as william bradford, Miles standish, john carver, William Brewster and Edward Winslow) signed the agreement. John carver was elected as the first governor of Plymouth Colony.

1852: louisa may alcott, a famous author in Little Women, published her first novel, The Painter of the Enemy: The Story of Rome. Louisa is one of the four daughters of Transcendentalists (that is, people who participated in an intellectual movement in 1930s and 40s of 19), and her father (amos bronson alcott) is a firm believer in educating and shaping a person's ideal and perfect mind. In the process of growing up, she was surrounded by educators and writers, such as Ralph Waldo Emerson, nathaniel hawthorne and Margaret Fuller, because they were friends and relatives of the alcott family. When she was a teenager, Louisa found that she loved writing, so she wrote several plays, poems and short stories. At the age of 19 (195 1), she finished her first publication under the pseudonym "Flora fairfield". This is a poem entitled Sunshine. A year later, on June165438+1October1day, Saturday night bulletin published one of her short stories for the first time. Of course, the original title of alcott's two semi-autobiographical novels is "Meg, Joe, Beth and Amy" (1868), and the better title is "Little Women", which established her status as a great writer. The second volume of the novel is called "A Good Wife", which tells the story of sisters entering their respective marriages in March. Alcott later wrote two more books to complete The Legend of the March Family, which were named Little Man (187 1) and Joe's Boy (1886).

19 18: The Allies signed an agreement with Germany to stop fighting at191815438+05438+01,thus ending the First World War. On Armistice Day, as we all know, the Germans responded to the 14 policy put forward by American President Woodrow Wilson. Germany was facing imminent failure because of the shortage of manpower and materials, so they signed an armistice agreement with their allies on a train outside Cambier, France. Although the signing of this agreement does not mean that Germany surrendered, it marks the victory of the allied forces and the end of the unofficial war. On June 28th, 2009, the Treaty of Versailles was signed and the war officially ended. The war left a series of damages in the participating countries (Germany, Russia, Austria, Hungary, France and Britain). More than 9 million soldiers were killed, about 2 1 10,000 people were injured, and millions of civilians died of hunger, exposure and disease.

1930: Einstein and his former student LeóSzilard were granted the patent of absorption refrigerator, which is called Einstein refrigerator or Einstein refrigerator. Encouraged by the news report of a family in Berlin, they began to improve the household refrigeration system, which was killed by the toxic smoke leaked from the refrigerator when the sealing strip broke. In order to prevent seal failure, their main idea is to completely eliminate moving parts. They designed a single-pressure absorption refrigerator by using ammonia equilibrium solution, water absorption solution and butane refrigerant, and maintained a similar design to the gas absorption refrigerator. They obtained 45 patents from several countries, involving three different types of designs. Their most promising patent was won by Swedish company Electrolux.