Sn is Tin. and the suffix for Chlorine is nearly always Chloride. The (II) means the Tin [in a hypothetical situation where the compound was purely ionic] has an oxidation state of 2, or +2, (ie deficient of two electrons). Source: A2 Chemistry Student.
The chariot was built of pieces of wood which had been bent into the required shape possibly by immersing them in boiling hot water for several hours, bending them and then letting them dry. Various kinds of wood were used: elm, ash for the axles and sycamore for the foot board. The Egyptians knew two types of chariots.
The first appearance of horses at Troy is around 1900 BC, also probably with the arrival of the Indo-Europeans. And the first arrival of the horse and chariot in Egypt comes with the invasion of the Hyksos, or Amorites, around 1700 BC, when the Amorites had been learning things from the Indo-European Hittites.