1. A reaction between an acid and a base that yields a salt and water. 2. The rendering ineffective of an action or substance, such as a drug. 3. The change of an acid solution to neutral by titration of an alkaline solution. 4. The change of an alkaline solution to neutral by titration of an acid solution.
Marijuana originated in Central and Southern Asia. It was discovered growing in the wild in China. China is known principally for its tea and opium, the great number of its people, itâs massive high-rises, but not really known for the discovery place of marijuana.
A second psychoactive species of the plant, Cannabis indica, was identified by the French naturalist Jean-Baptiste Lamarck, and a third, uncommon one, Cannabis ruderalis, was named in 1924 by Russian botanist D.E. Janischevisky.ermanic tribes brought the drug into Germany, and marijuana went from there to Britain during the 5th century with the Anglo-Saxon invasions. [See map of marijuana's spread throughout the world.]. This map shows how marijuana spread throughout the world, from its origins on the steppes of Central Asia.