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 Chinese agreed to sign the Treaty of Nanjing which signified the end of the First Opium War in 1842 because of the potential for an even greater defeat through battle.The major goal of the treaty was to open up trade in China to the British which the British gained from the weakened Chinese Government.he Chinese agreed to sign the Treaty of Nanjing which signified the end of the First Opium War in 1842 because of the potential for an even greater defeat through battle.