According to Guns, Germs, and Steel, what five factors contributed to the transition from hunter gatherer to farming?

Diamond
argues that the "neolithic transition" from food gathering to agriculture evolved
gradually, with long periods in which the two modes of food provision coexisted. Several
different factors contributed to the shift.

One of the main factors was a
lack of wild animals suitable for hunting and a lack of plants suitable for gathering. This in
turn was due to either climate change or to animal population declines because of unsustainable
volumes of hunting and gathering. This would make agriculture and domestication of animals more
attractive.

Next, once one society began to domesticate plants and animals,
neighboring societies would emulate them, meaning that the idea would spread rapidly. As
agriculture and the domestication of animals is far more efficient than hunting and gathering
and allows for urbanization and specialization of labor, societies that had undergone the
neolithic transition would have been more powerful and numerous than hunter-gatherer neighbors
and would have been able to dominate, assimilate, or exterminate them. The population growth and
the increased population density of settled agricultural societies would preclude a return to
hunting and gathering due to the need to support a large population.