September 4th in history
Main events:
1: September 4, 1781 - the founding of Los Angeles
2: September 4, 1870 - the revolution broke out in Paris and the establishment of the republic was announced. This was the third in French history Republic, the Third French Republic
3: September 4, 1951 - The United States manipulated the signing of the peace treaty with Japan
4: 1958 September 4, 1959 - China announced territorial sea rights
5: September 4, 1959 - China's first synthetic fiber factory was built
-
September 4, 1781 - Los Angeles was founded
On this day 241 years ago, On September 4, 1781 (July 17, 1781 in the lunar calendar), Los Angeles was founded.
Los Angeles (City of Los Angeles, often abbreviated to L.A.) is a city located in the southern part of California on the West Coast of the United States. Ranked by population, Los Angeles is the largest city in California (with a population of more than 4 million) and the third largest city in the United States. The second largest city after New York City. Its area is 469.1 square miles (1214.9 square kilometers). The Los Angeles- Causeway -Santa Ana metropolitan area has a population of 13 million. The greater Los Angeles area covers a larger area, including 5 counties and a population of approximately 18 million. It is a first-tier global city on the list of world-class cities of the Globalization and World-Class Cities Research Group and the Internet.
Los Angeles was founded on September 4, 1781 by Felipe de Neve. It was once part of Spain and belonged to Mexico after it won independence from Spain in 1821. In 1848, Mexico lost the Mexican-American War and ceded California to the United States. On April 4, 1850, Los Angeles was officially established as a city (five months later, California became a state of the United States). The city of Los Angeles is also the county seat of Los Angeles County.
Los Angeles is one of the world's centers for culture, science, technology, international trade and higher education. It also has world-renowned institutions in various professional and cultural fields. The city and the immediate area form the basis of Los Angeles' international reputation and global status in popular entertainment such as film, television, and music.
二
September 4, 1870 - Revolution broke out in Paris and the establishment of a republic was announced. This was the third republic in French history, namely the French Third Republic
The French Third Republic (French: La Troisième République; English: French Third Republic ), the official country name is still the French Republic (République Française, named after the third republican government in France, served as the orthodox government of France from 1870 to 1940.
The Republic adopted the model of parliamentary democracy and was established on September 4, 1870. The Republic was established after the Second Empire fell due to the failure of the Franco-Prussian War and the Paris Commune was successfully suppressed. It was not until 1940 that it collapsed due to the invasion of Nazi Germany.
Although the Third Republic was never considered to be in power for a long time, it was unexpectedly the first long-lasting and stable republican regime in France, winning French support for the republican form of government.
三
September 4, 1951 - The United States took control of the signing of the Peace Treaty with Japan.
On this day, 71 years ago, on September 4, 1951 (August 4, 1951 in the lunar calendar), the United States took control of the signing of the Peace Treaty with Japan. .
On September 4, 1951, in accordance with the "Common Declaration of the United Nations", the "Cairo Declaration", the "Potsdam Proclamation" and other relevant international agreements, after the end of World War II, the Allies fighting against Japan should Establish a comprehensive peace treaty with Japan and make Japan a democratic and peaceful country through the peace treaty. However, the United States betrayed its faith and unilaterally decided to convene a peace conference with Japan when it suffered a disastrous defeat in the war of aggression against Korea. On September 4, 1951, under the control of the United States, a peace conference with Japan was held in San Francisco, China, excluding the participation of the People's Republic of China and others, and a separate peace treaty with Japan was signed. On the 18th of the same month, the Chinese government issued a solemn statement refusing to recognize the peace treaty. In September 1972, Japanese Prime Minister Kakuei Tanaka visited China, and China and Japan issued a joint statement, which ended the abnormal situation between the two countries and normalized diplomatic relations.On August 12, 1978, the two countries signed the Sino-Japanese Treaty of Peace and Friendship. The Soviet Union and Japan issued a joint declaration in October 1956, announcing the end of the state of war and the restoration of diplomatic relations.
四
September 4, 1958 - China announced its territorial sea rights.
On this day, 64 years ago, on September 4, 1958 (July 21, 1958 in the lunar calendar), China announced its territorial sea rights.
On September 4, 1958, the Chinese government issued a statement on territorial waters announcing that the territorial waters of the People's Republic of China are 12 nautical miles wide; China's territorial waters are delimited using the straight baseline method. The waters within the baselines include Bohai Bay and Qiongzhou. Strait , including , is all Chinese Inland sea , islands within the baseline, including Dongyin Island , Gaodeng Island , Matsu Islands , " White Dog Islands ", Wu Island, Big and Small Kinmen Island, Dadan Island, Erdan Island , Dongding Island, etc., are all islands in China’s inland sea. The statement also announced that all foreign aircraft and military ships are not allowed to enter China's territorial waters and airspace without the permission of the government of the People's Republic of China; any foreign ship sailing in China's territorial waters must abide by the relevant laws and regulations of the government of the People's Republic of China. The principles stipulated above in the statement also apply to Taiwan and its surrounding islands, Penghu Islands, Dongsha Islands, Zhongsha Islands, Nansha Islands and other islands belonging to China.
五
September 4, 1959 - China's first synthetic fiber factory was built
On this day 63 years ago, on September 4, 1959 (August 2, 1959 in the lunar calendar), China's first synthetic fiber factory was built The factory was built.
On September 4, 1959, China's first synthetic fiber factory, the Beijing Synthetic Fiber Experimental Factory, was built and trial production began.
The first synthetic fiber factory in China is the Beijing Synthetic Fiber Experimental Factory. Construction started on August 25, 1957, and was designed with the help of the former Democratic Republic of Germany. On September 4, 1959, the polyamide 6 fiber plant was completed and put into production. Using by-products of coal coke as raw materials, it produces more than 380 tons of synthetic fibers annually. The establishment of the Beijing Synthetic Fiber Experimental Factory laid the foundation for the trial production of synthetic fibers of various specifications, accumulation of technical data and training of technical talents, and the development of China's synthetic fiber industry.
Polyamide 6 (PA6) fiber is also called polycaprolactam fiber polycaprolactam fiber, nylon 6. Germany invented it in 1938 and used caprolactam polymerization to prepare polyamide 6 and produce fiber. It was put into industrial production in 1941. The main products are filament yarn, as well as textured yarn , bulked yarn , short fiber and monofilament, etc. Polycaprolactam is melt-spun directly or sliced, and then drawn into finished filaments.
can be used in woven, knitted and warp knitted fabrics, suitable for making socks, underwear, sweatshirts, carpets, interior decoration fabrics, and can be blended with cotton, wool and viscose fibers. In industry, it is mainly used as tire cord, transmission belt, rope, fishing net, screen, filter cloth, sewing thread, etc.
