Why is societal welfare is maximised when the free market produces at the point where demand equals supply?

The most heavily populated areas of africa are found

Which diagram provides an accurate example of how the government uses open market operations?

According to the article,"social credit" is question 3 options: an experiment to people talk on-line a farming experiment that hurt people under mao ze dong using someone else's data from the internet, to give or take away things such as the right to buy an airline ticket a credit you get in china for having friends in real life, and not just on social media