Paleolithic age or the stone age as often referred by people was the age of hunting and learning survival skill sets. Due to these survival skills developed/learned during this Paleolithic age, the humans began to spread throughout the globe at a very high rate. These people developed sharp and strong tools using stones and natural fibers.
Apart from these tools spirituality, language, art, scientific inquiry were other inventions made at that time.
Paleolithic humans also developed bows and arrows for hunting , later developing wheels for locomotion. So with these inventions slowly and rapidly the Paleolithic people were moving around the globe so much so that by 12000 B.C.E these people were spread to six continents out of the seven continents present.