What invention improved life for farmers during the Han dynasty? Farmers used wheelbarrows to move loads.
Farmers used looms to create silk products.
Farmers used crossbows to hunt for food.
Farmers used swords to protect their crops.

Changes in farming were so important during the Han Dynasty because increased farming allowed for there to be a surplus of food, which allowed people to focus on other skills and tasks that furthered the empire.

Explanation:

equal area projections

equal-area projection. a projection in which regions on the earth's surface that are of equal area are represented as equal.