GEOG 3 Lecture Notes - Lecture 8: Population Connection, Demographic Transition, Industrial Revolution
16 Jul 2020
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Document Summary
There are four stages to the demographic transition: All countries are in one stage or another of the demographic transition. Once a country has entered a stage, it cannot go back down to a previous stage. Most of humanity"s several-hundred-thousand-year occupancy of earth was characterized by stage 1 of the demographic transition. Crude birth and death rates vary yearly but over time they were comparable. National increase rate was essentially zero, and world population was constant at about half a million. During this period primary food relied on hunting and gathering. As food became easier to obtain, population increased, but when food became more difficult to obtain, the population decreased. About 8000 bc the population became to grow by several thousand per year. Between 8000 bc and 1750 ad the population from 5 million to about 800 million. This was the first time humans domesticated plants and animals.
