It depends if you are a follow of Creationism or Evolution.
Creationists (Christian tradition) would put this as Adam, somewhere in the Middle East.
Evolutionists would say that there was never a 'first' man, but a gradual transition from primitive man-like creatures into creatures indistinguishable from modern man.
Early man-like people developed in Africa and spread from there. The development of later modern man happened in Europe, Asia and Africa.
America and Australia were settled by modern men (and women!) who spread from Asia.
Africa
Adam and Eve , or aliens ( ;
6 billion people live on Earth.
People who live on Earth are called humans or Earthlings.
People live in earth with houses and buildings
Earth!
people live everywhere on earth
No; in our solar system people live only on Earth
People in the solar system live on Earth.
on the planet earth
earth
Heaven