What is paleo in history?
Paleo is a prefix of Greek origin used to mean something ancient and/or prehistoric.
in case of "history": ancient history or prehistoric history.
The paleo diet is so named after the paleolithic period, a time in human history that was pre-agriculture. This means that humans were on a 'hunter-gatherer' diet, consisting of fewer refined foods. The paleo diet excludes items such as refined sugars, grains, legumes, potatoes, dairy products and processed oils.