because the land was fertile enough to grow food
they grow food to live.
grow plants to have food made to eat
people used the land in ancient china because it was located near rivers which gave them water, food, transportation, trade, fertile soil for planting, even for entertainment
Deltas are extremely fertile land. Fertile land means that food is easy, generally the easier it is to grow food the more people join the area.
there was not enough land to grow food for the thriving people
One problem is how much land we have that we can grow food on. Only 1/32 of our land we can grow food on. There for our food amount is rappidly decreasing. Since, we can't grow food most places we won't have enough food if our population keeps increasing. Also, the amount of land people are able to live on is only 1/8. We already are living on most of that land. If our population keeps increasing we will practically be living on each other's feet!
One problem is how much land we have that we can grow food on. Only 1/32 of our land we can grow food on. There for our food amount is rappidly decreasing. Since, we can't grow food most places we won't have enough food if our population keeps increasing. Also, the amount of land people are able to live on is only 1/8. We already are living on most of that land. If our population keeps increasing we will practically be living on each other's feet!
One problem is how much land we have that we can grow food on. Only 1/32 of our land we can grow food on. There for our food amount is rappidly decreasing. Since, we can't grow food most places we won't have enough food if our population keeps increasing. Also, the amount of land people are able to live on is only 1/8. We already are living on most of that land. If our population keeps increasing we will practically be living on each other's feet!
To "irrigate" it.
They did not have enough land to grow grain. Only 1/4 of the land was usable for growing grain. They traded for grain in the region.
1) land It helps people grow food and what we live on :p 2) Sand It's an energy source