Ineed these words : paleolithic age nomads ice age domestication food surplus all used in three sentences.

During the Paleolithic Age, also known as the Stone Age or Ice Age, the Paleolithic people were known as nomads. The Paleolithic usually are debated by the Neolithic People because the Neolithic tamed their animals. This is known as domestication. They even had farms known as agriculture. Due to all this food, they had food surplus.

It's a bit more than 3 sentences but I hoped this help. you can use this info and make 3 sentences if u want.

Militarism is the answer.