For much of their histories, warfare in pre-Columbian America and Europe was constrained by the annual agricultural cycle because men were needed to plant and harvest enough crops for winter and the following year.

“And the nature of warfare in the pre-Columbian American and Europe for much of its history was driven by...”

“the annual cycle of planting and harvesting the crops you need the men on their farms to do that because if they're not there then you face a very hard year coming up if you don't have enough crops set aside to get you through the winter and the following year so for all those reasons the NK yes those huge numbers weren't able to really overwhelmingly apply them at the same time if they caught perhaps”