what impact does lead zinc tin copper iron ore and petroleum have on trade?
Lead, zinc, tin, copper and iron ore are not precious metal. These metals are probably use to make coins,car frames (steel extracted from iron ore and mixed with other alloy), copper and steel are mainly for weapon manufacturing and industrial or construction purposes. According to the economic principle of demand and supply, petroleum has the impact to the society needs than the other metals. Crude oil is going to be more expensive than the assumed crude oil standard price in the early 60s was $ 1.6 US dollars per barrel as the standard price sold in the OPEC, such as Saidi Arabia. Due to human nature of greed and stock market trading tactics, crude oil price has raised to $112 US per barrel. It helps the rich getting richer and poor getting poorer and eventually become can't afford to drive and some third world countries can't afford to eat and awaiting to die.
