As a descendant of the Chinese people with an ancient civilization of 5,000 years, we have a strong impression when we step into the American History Museum located in the north of national mall, Washington, DC. This nation, which was formed more than 200 years ago in the independence revolution (equivalent to the middle and late Qianlong period in China) and rose in the westward expansion and modern industrialization movement in the19th century, could not produce a splendid ancient civilization, but there were nearly100 cultural relics on display. This is in sharp contrast with the exhibition halls of ancient civilizations such as China, Egyptian, Iranian and Indian in the friel Museum on the south side of national mall. The latter has the cultural relics of the Neolithic Age and the Bronze Age and a large number of ancient treasures, and has its former glory.
/kloc-In the second half of the 9th century, it took only 30 years for the young American people to make their national wealth far surpass that of Britain, Germany, France and other western European powers, and their industrial output value jumped to the top in the world. Between 1850 and 1899, there are 70 12000 technological inventions in the United States. The first invention and success made by the United States for the great development of science and technology in the modern world are numerous: the first telegraph, telephone, the first automatic dialing telephone office, the first incandescent lamp, the first power plant, the first radio station, the first transatlantic steamboat voyage, the first successful airplane, the first direct flight across the Pacific Ocean, the first supersonic plane, the first electron tube computer, transistor computer, Large-scale integrated circuit computer, the first robot, the first multimedia technology, the first transoceanic submarine communication optical cable, the first computer internet, the first international communication satellite, the first global television broadcasting satellite system and global satellite positioning system, the first human landing on the moon, the first successful launch of the space shuttle, the first establishment of cybernetics, information theory and genetics theory, the first decoding of genetic codes, and the first launch of the space shuttle. From 1920, the world science center moved from Europe to the United States, and the United States became the first winner of basic science. Among the 466 Nobel prizes in the 20th century, the United States accounted for 20 1.