Not too sure but to get you closer to the answer, Rocks aren't Minerals; They are comprised of 2 or more minerals, And Limestone is also comprised of minerals. Now between Silver and Gold, I'm not sure but there have been talk over the years as the Great Plains being the next location of a Gold Rush. But again I'm not too sure, but I hope this helps.
I believe the answer is: Regulate behavior
The self system is a concept that teach us to re-evaluate everything that we do in order to know their implications in the future.
By knowing this, we could determine the behaviours that would benefit or damage our development, which is really helpful to regulate our behavior.
freedom of trade between Europeans and Muslims in the region
According to edg****
It can be deduced from the given that what Mario used as payment for the goods that he acquired is also goods. The answer to this item is commodity. It is a type of money that is not in a form of cash but has a value that can be an exchange for another commodity.
