I think to help the world become good in the economy is to provide capital assistance to the poor to improve their lives, I'm sure if many rich people care about poverty then the benefits will be better.
If need to improve the country economy. People growth is important. So country will be help to people growth. Now bitcoin is help to people future growth. Economy is not currency. It part of the country growth. Most of the business. Before loach any country. It will be check the other country economy. So if need for the other country growth. Check the country economy. So people is important of the country growth.
What do you mean by people growth? I am unable to make link between countrys economy and people growth. What I understand from your comment is that if the country needs to make its economy strong, it has to work on her people so that they can become strong and in result of that, work hard and make the economy of their country strong.