As early human began to progress and move from one place to another, they developed new invention for survival. The fire used to clear the forest so that they could cultivate crops. The wheel used as transportation from one place to another. The metal used for making agricultural tools including ploughs along with weapons to defend from rivals and hunting. Dogs used for hunting, companionship, and protection.
The process by which a highly developed population's rate of growth will stabilize is called Demographic Transition. Demographic transition is a model that describes the change in population over time. It is the transition in the birth and death rates over the past two hundred years.
