Question

Many features built for this purpose known as andenes (“ahn-DEH-ness”) can be found in the Sacred Valley. (-5[1])The milpa (“MEEL-pah”) system was used for this activity in Mesoamerica. (15[1])The Codex Vergara recounted the use of artificial islands (15[1])for this activity (15[1])called (15[3])chinampas, (15[2])which were popular (15[1])on (15[1])Lake (15[2])(*) Texcoco. (10[1])The “Three Sisters” commonly used in this activity (10[1])were often arranged together in a “companion” method. The Incas were able to do this action through terracing, which accounted for moisture retention. For 10 points, what type of activity may involve cultivating corn or wheat? ■END■

ANSWER: farming [or agriculture; accept more specific answers like irrigation or planting or growing or harvesting crops; prompt on moving water by asking “for what purpose?”]
<History - World History>
= Average correct buzz position