Re: Principal payment vs. Extra payment? When you get any loan, most of your extra payments will be applied to the principal. Certainly read your loan docs to be sure. But making extra payments will certainly cut your interest expense and you'd pay it off much sooner too. Using your example, I'll assume that your monthly payment is approx.
Italy has a variety of natural resources such as coal, zinc, potash, marble, barite, pumice, asbestos, fluorspar, mercury, feldspar, pyrite, natural gas and crude oil reserves. The Italian government has complete control of its mineral industry.
Italy and Greece were relatively poor in minerals, thus they did not contribute a word for this to English, but there was extensive mining from an early date in Celtic lands (Cornwall, etc.). From c.1400 as a tunnel under fortifications to overthrow them.