There are several reasons why the population may have grown during the Mesolithic age. One reason is that the development of new technologies, such as the creation of new tools and weapons, made it easier for people to hunt and gather food. This would have helped them to sustain larger populations. Additionally, the use of fire to cook food would have made it more nutritious and easier to digest, which would also have allowed people to support larger populations. Finally, the transition from a nomadic lifestyle to a more settled one may have allowed people to establish larger, more stable communities that could support more people.
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