80°E
120°E40 °NASIA
AFRICA
EUROPE
INDIA
CHINA
INDIAN OCEAN
Tig
ris
R.HuangHe(YellowR.)
Eu
ph
rat
esR
N.
ile
R. IndusR.SAHARAKALAHARI
DESERTAR
AB
IANDE
SE
RTTAKLIMAKAN
DESERTNA
M
IB
DE
SE
RTJarmoJericho Pan-poNORTH
AMERICASOUTH
AMERICATehuacan
ValleySONORANDESERT
ATACAMADESERTPACIFIC
OCEAN
ATLANTIC
OCEAN
Tropic of Cancer0 ° EquatorTropic of Capricorn80°W0
01,000 Miles
2,000 KilometersAgriculture by 5,000 B.C.
Agriculture by 3,000 B.C.
Agriculture by 2,000 B.C.
Agriculture by 500 B.C.Major crops
SorghumRiceSoybeansGrapesOlivesWheatCottonCornBananasBarleyPotato0 2,000 Kilometers0 1,000 MilesAgriculture Emerges, 5000–500 B.C.
▲ A Neolithic grindstone and vessel
used to grind grainThe Peopling of the World 17
SKILLBUILDER: Interpreting Maps and Charts
1.MapWhat geographic feature favored the development of agricultural areas before 5000 B.C.?
2.ChartWhat effect did the agricultural revolution have on population growth? Why?Agricultural Revolution
50 °52 °54 °56 °58 °60 °2025 1015 15Average Global Temperature(in Fahrenheit)Years Ago (in thousands)beginnings of
agriculturelast ice ageSource: Ice Ages, Solving the MysteryTemperature
025507510 01251502025 1015 15
Years Ago (in thousands)Hunting-
gathering
stageAgricultural
RevolutionWorld Population(in millions)Post-
Agricultural
RevolutionSource: A Geography of Population: World Patterns