Question

Which advances helped increase China’s population?

terrace farming
water wheels
curved-shaft plows
gunpowder

Answer 1

gun powder

Experimenting with life-lengthening elixirs around A.D. 850, Chinese alchemists instead discovered gunpowder. Their explosive invention would become the basis for almost every weapon used in war from that point on, from fiery arrows to rifles, cannons and grenades.