Canada strongly related to crude

Crude, just as natural gas, is a resource that is used in many fields and branches of industry. Not only is it mainly refined into various types of fuels but also it affects strongly entire economies of many countries. Some of them, such as Canada and USA, are very much related to the oil market. […]

Crude, just as natural gas, is a resource that is used in many fields and branches of industry. Not only is it mainly refined into various types of fuels but also it affects strongly entire economies of many countries. Some of them, such as Canada and USA, are very much related to the oil market. However, petroleum’s relationship with non-ferrous metals is non-obvious. Here are some examples of relations:

As it turns out, the price of the petroleum is strongly correlated with prices of some non-ferrous metals, for instance, with platinum but also with copper and, to a lesser extent, with prices of gold.
As it turns out, the price of the petroleum is strongly correlated with prices of some non-ferrous metals, for instance, with platinum but also with copper and, to a lesser extent, with prices of gold.