Which of the following countries has the largest copper mines

I do not remember but I think it is Europe.

Escondida copper mine in the Atacama Desert in Northern Chile is currently the world's largest copper mine by reserve. The mine contained more than 32 million tonnes (Mt) of recoverable copper reserves at the end of 2012

So  if  the sum of the enthalpies of the reactants is greater than the products, the  reaction  will be  exothermic.  if  the products side has a larger enthalpy, the  reaction  is  endothermic. you may wonder why  endothermic reactions, which soak up energy or enthalpy from the environment, even happen

Answer the above statement is correct (true);