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.
It was the belief that it was destiny for the Caucasians to expand and to take over North America. This caused conflicts when the Caucasians wanted to take land from the native Americans.
