Over the years, the definition of wealth has evolved, along with the number of billionaires worldwide. Today, the billionaire count is higher than ever, with a total of 2,781 individuals, according to recent reports. The United States leads with 813 billionaires who collectively hold $5.7 trillion in wealth. China, including Hong Kong, follows with 473 billionaires, while India ranks third with 200 billionaires. While modern billionaires like Elon Musk, Jeff Bezos, and Mark Zuckerberg dominate the headlines, the world’s first billionaire emerged more than a century ago, in 1916. The World’s First Billionaire John Davison Rockefeller Sr., born on July 8, 1839, in Richford, New York, became the world's first billionaire. His financial success was largely due to the creation of the Standard Oil Company, a business that transformed him into a global economic powerhouse. His wealth was so substantial that, adjusted for today's standards, he would still top the global wealth rankings. Rockefeller's life and business ventures were a mix of praise and criticism. His ability to generate wealth earned him respect on Wall Street, but investigative journalists revealed some of the questionable tactics he used to expand his empire. Despite this, his charitable efforts left a significant impact, highlighting his commitment to philanthropy. Early Life and Business Ventures Born to William Avery Rockefeller and Eliza Davison, Rockefeller's early years were spent in New York before the family moved to Cleveland, Ohio. There, he left school early and began working as an assistant bookkeeper, earning 50 cents a day. In 1859, with a loan from his father, he started his own commodities brokerage. Around the same time, technological advancements made vast underground oil reserves accessible in Pennsylvania and Ohio, creating a boom for the oil industry. Seeing the potential, Rockefeller and his brothers established the Standard Oil Company of Ohio. Focusing on refining, the company quickly gained a reputation for efficiency and cost-effectiveness. Rockefeller's commitment to minimizing waste and maximizing profits became a signature aspect of his approach. A Legacy of Wealth and Philanthropy Despite his immense fortune, Rockefeller lived a modest life, avoiding unnecessary luxuries. His philanthropic contributions were notable; he established the University of Chicago and donated what would be about $2 billion in today's currency. By the time he passed away in 1937, his assets were equivalent to 1.5% of America's entire economic output. To hold a similar share today would require a fortune of around $340 billion—far surpassing the wealth of current billionaires. Top 10 Richest People in the World: A Look at the Billionaires Shaping Our Future Elon Musk’s Wealth Soars to $313.7 Billion Following Tesla’s Market Surge Six Indian-Americans Featured in Fortune's 2024 List of Most Powerful Business Leaders