California Gold Rush

John Rockefeller is still considered one of the wealthiest people in the world. At the time of his death, he was worth $660 billion, which was 1.5% of the total US GDP. Elon Musk's net worth is estimated at $244 billion.

However, few people wonder how John D. Rockefeller achieved such tremendous results. The answer to this question is quite simple – oil. He founded a mining company, which became a monopoly in the field of good development in the United States and other oil-producing countries – Romania, the Middle East, Latin America, and even Tsarist Russia.

John Rockefeller spent all the money he earned not on his luxury but business development and charity. He also led an active educational work in economics, which allowed other entrepreneurs to make massive money by following his example.

Of course, it is unlikely that today it will be possible to earn such a vast fortune on oil production from scratch; however, this is not a reason to give up. Many believe that mining copper or gold can also be incredibly profitable, especially in areas still little explored. For example, mining in Mongolia. This country has great potential. Most of the gold, nickel, and copper deposits remain undeveloped here. Investing in this industry will allow you to earn additional income and follow the example of John D. Rockefeller.