Matching Pairs Lesson 23: The Han Dynasty Online version Pages 255-259 by ASHLEY DAVIS 1 SHORT TERM EFFECT: The Han invented the chain pump. 2 SHORT TERM EFFECT: The Han invent the wheelbarrow. 3 LONG TERM EFFECTS: The Han invent the chain pump. 4 SHORT TERM EFFECT: The Han invent the iron plow. 5 LONG TERM EFFECTS: The Han invent the iron plow. 6 LONG TERM EFFECTS: The Han invent the wheelbarrow. Large areas of land can be planted more quickly, allowing farmers more time to build homes. Less work is needed to push dirt away from the row being plowed. Water can more easily be moved from low irrigation ditches to fields. Droughts can be more easily survived, and enough food can be grown to feed families. More agricultural products are brought to market and to shared grain storehouses. Heavy loads can be carried longer distances, with less effort.