If you could make one thing in the world free to everyone, what would you choose and why? How would this change the world?

Education. All the way from primary school to university

Explanation:

Free education is the best means to achieve equality and fight poverty that I can think of. There are still issues with it, though. In absolute poverty, even if school is free kids might still be needed for work and rich people will still have an advantage because they can pay for tuition etc.

Answer: I would make healthcare free! I would make healthcare free because everyone should be able to go to the doctor or hospitals when being sick. This would benefit so many people's lives for the better, because no one should worry about paying thousands just to visit a doctor or specialist