These are the 10 causes for which the richest people in the world give their money

And the causes they choose are influenced by a number of factors, writes Business Insiver.

American billionaires traditionally finance new buildings or departments in their poor countries, Wealth-X reported, while some billionaires prefer to donate for causes that will put them in public view, such as arts and public affairs.

Below, read the details to learn the 10 main reasons why billionaires give money, ranging from the least popular to the best - known.

10. Refuge

Jeff Bezos is one of some that constitute only 0.1% of billionaires offering donations to provide shelter for the homeless, according to Wealth-X. Business Insider had announced earlier that a fund of his promised $2 billion to organizations fighting for the homeless.

9. Food, Agriculture, and Food

David Tepper is among only 0.1% of billionaires worldwide who financially support organisations that are focused on feeding the hungry, according to Wealth-X. Only Tepper was personally committed to $2 million.

8. Public Issues

George Soros is among 12.4% of billionaires worldwide who donate donations to organisations that focus on public affairs, according to Wealth-X.

The Soros Open Society Foundation aims to support democracy through grants for projects on human rights and justice, journalism and other areas, according to its website.

7. Religious Organizations

Wealth-X reports that 12.4% of billionaires donate to religious organisations, but perhaps no one more than the controversial founder and CEO of Hobby Lobby, David Green. He has made considerable donations of money and property in several Christian colleges, including Liberty University, Zion Bible College and Oral Roberts University, according to Forbes. Green also supports foundations that provide Christian literature and has personally financed distribution of 1.4 billion texts.

6. Developing Children and Youths

Ex- Microsoft CEO Steve Ballmer is among 31.9% of billionaires who donate donations to youth development programmes, according to Wealth-X.

The Ballmer Foundation, Ballmer Group, focuses on <x0). Efforts to improve economic mobility for children and families in the United States, which are potentially poor”, according to the organisation's website.

5. Environment, preservation, and animals

Maintaining the environment is the fourth most popular cause among billionaires, receiving donations from 32.6% of the world's billionaires, according to Wealth-X.

Tesla's director, Elon Musk, anonymously donated $6m to Sierra Club before demanding that the organisation's president publish his contributions, Bloomberg reported.

4. Health and Medical Research

Wealth-X reports that 57.4% of billionaires have made donations to the healthcare sector.

The CEO of Salesforce, Marc Benifoff, donated $100 million to the University of California in San Francisco in 2010 to build a child hospital named after him, according to NBC.

3. Art and Culture

The family that built a fortune for the sale of OxyContin, Sacklers, is known for the great donations to museums worldwide.

2. Social Services

Wealth-X has found that 61.7% of the world's billionaires donate social services to organisations, a category that includes crime prevention, poverty reduction and unemployment programmes.

America's richest family, Waltons, have made the economic development of their country in Arkansas one of their three philanthropic goals, according to their founding website.

Walmart's founders, the grandchildren of Sam Walton, plan to spend $2.2 billion between 2016 and 2021 through their establishment in social services in Arkansas, in addition to education and the environment.

1. Education

More billionaires donate education than any other cause, according to Wealth-X, with 79.5% supporting the cause.

Otherwise, education is essentially the work of the Gates Foundation in the United States, according to its website.