Why did Michael Jackson write we are the world?

Answer 1

He wrote it with Tina Turner and Lionel Richie for a charity project called "USA for Africa". It was released as a single and all the money went to Ethiopia where people were starving. The message in the song is that we are all a part of the world, even if we don't know each other we should help.

Answer 2

It was a benefit for African famine relief, Michael was always involved with charity work.