An economy that combined and caused the wichitas to seldom suffer from lack of food.

Hunting and Farming is the correct answer.

Explanation:

The Wichita Indians are the original inhabitants of Texas and Oklahoma but after the arrival of the Europeans they moved towards Kansas.Most of the Wichitas speak English today, some of the elders also converse in Wichita Language. Wichita is an endangered language today.in the past the Wichitas survived by Hunting and farming, Men used to hunt and women used to take care of children, do the cooking.Women used to grow  beans, squash and pumpkins and men used to hunt game and buffaloes. They also collected fruits and nuts. Bows, arrows,clubs and hides were their weapons. It was due to hunting and farming that they never faced food shortage.

answer; i do believe that the (14th)fourteenth amendment is the correct answer

it made them more prductive and efficent but with the change of polcies less and les got into the navy