Post War Economic Adjustment. Millions of soldiers returning home and there was no need for many people to be working wartime sectors. They advocated for better wage and working conditions.
I believe the answer would be D (all of the above).
Answer:correct me if I’m wrong but is it B
Explanation:

Actually Welcome to the Concept of the history.
=> Potatoes and quinoa were among the unique crops; Camelids (llamas and alpacas) and guinea pigs were the unique domesticated animals.
=> The Incan civilization was predominantly agricultural. The Incas had to overcome the adversities of the Andean terrain and weather.