Wednesday, January 10
Scarce food, and how to find enough food to sustain population, is a great problem.
Settled societies developed agriculture as a way to get food.
Agriculture is the basis of
all settled societies.
The agricultural revolution was quite gradual.
Early humans were hunter-gatherers.
As population grew, so did competition for
The agricultural revolution began around 7,000 BC out of harsh
It didn’t occur all over at the same time, but began in pockets, before
5,000 BC in Mesopotamia.
It fans out from there across the globe.
There were other
pockets too, with differing plants and degrees of specialization.
The agricultural revolution happened very slowly, over centuries, with occasional
disruptions and accelerations, but it began around 7,000 BC.
As it developed, it fanned outward.
Different pockets came in contact with each other.
Upon these contacts were built economies, trade, and technology.
revolution set human society in motion.
By 2000 BC, it had spread to all Eurasia.
Humans began to settle down and focus on agriculture.
Knowledge of plants solves
problem of hunger.
As agriculture expands, though, soil gets exhausted.
In consequence of the agricultural revolution, population grows, because a steady food
supply allows people to live longer, healthier lives.
There is lower infant mortality.
danger of hunting was removed.
You need less land to survive.
societies must spread out, which means there is little growth.
The farming lifestyle
doesn’t require this.
Population increases because people live closer together.
creates the problem of needing more land for more food.
As the food supply becomes reliable, a surplus develops, allowing storage of food for