Dmitri Mendeleev presented his periodic table of the elements based on increasing atomic weight on March 6, 1869, in a presentation to the Russian Chemical Society. While Mendeleev's table was the first to gain some acceptance in the scientific community, it was not the first table of its kind.
In the end, the British sale of opium was used as means for  obtaining more land and trading rights from the Chinese, leading to  the devastation of the Chinese government and economy which is why  The First Opium War will be remembered in history as the time when  China was ultimately betrayed by the British.
The Treaty of Nanking (Nanjing) ended the first Opium War on August 29th 1842.    During the second Opium War the Treaties of Tianjin and Aigun ended the first part but â¦ shortly after the war continued because the Xianfeng Emperor was persuaded to resist the West by his ministers.