Why are developed countries such as Britain and the US rich and powerful?

Why are developed countries such as Britain and the US rich and powerful?A lot of people don’t get it.Usually everyone said, now too poor, work hard!When we get rich, many problems will take care of themselves.But when we get rich, we find the problem of being rich.When we are poor, we should guard against thieves… Read more Why are developed countries such as Britain and the US rich and powerful?