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 First Battle of Bull Run was the first major battle of the Civil War. Although the Union forces outnumbered the Confederates, the experience of the Confederate soldiers proved the difference as the Confederates won the battle.ohnston's army made the difference pushing back the Union army. With a final cavalry charge led by Confederate Colonel Jeb Stuart, the Union army was in full retreat. The Confederates had won the first major battle of the Civil War.