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.
Save for the disastrous defeat at the Battle of Tunis in Africa, and two naval engagements, the First Punic War was a nearly unbroken string of Roman victories. In 241 BC, Carthage signed a peace treaty under the terms of which they evacuated Sicily and paid Rome a large war indemnity.