What was trade like in Paleolithic times?

During the Paleolithic Era, people were nomads and Paleolithic was known as old stone age. People were nomads in which they moved from place to place in search of food and shelter. They also made simple tools using bone, wood, and stone. They use fire and make clothes from animal skin (hide). Women also gathered berries and Men hunt for buffalo. They love in groups of 15-20 people.