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.
A Salute to the Wheel. Always cited as the hallmark of manâs innovation, here is the real story behind the wheel â from its origins to its reinvention. Evidence indicates the wheel was created to serve as potter's wheels around 3500 B.C. in Mesopotamiaâ300 years before they were used for chariots. (Jim Vecchi / Corbis)