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.
You've already chosen the best response. The Treaty of Nanjing ended the First Opim War in 1842, Britain made china pay a huge indemnity (payment for losses in the war). Britain also gained Hong Kong. It gave the British rights to ports and low tariffs.Spikers.ou've already chosen the best response. The Treaty of Nanjing ended the First Opim War in 1842, Britain made china pay a huge indemnity (payment for losses in the war). Britain also gained Hong Kong. It gave the British rights to ports and low tariffs.