Development of core areas
Early core areas & agriculture hearths develop where there is
Rivers provide alluvial soils through yearly floods. Floodplains become agricultural hearths.
Agriculture allowed greater population density and changes in:
Hydraulic societies invest heavily in irrigation and terraced fields
The first cities are centers of
The original core of Mexico remains dominant
Rivers provide alluvial soils through yearly floods
Water also provides access to trade
World trade centers:port cities and central places
Industrial location during the industrial revolutions
water, wind, and wood
Why are they there?
The Fall Line and major cities of the Eastern U.S. http://www.gly.uga.edu/railsback/1122EUSMISR.html
The Fall Line
"River vessels usually cannot travel beyond a fall line and their cargoes must be unloaded there. The falls (see waterfall) also supply water power for the development of industry such as textile and grist mills. For these reasons a fall line often marks a string of developed areas." http://www.infoplease.com/ce6/sci/A0818202.html
Why Virginia's Cities and Towns Are Located Where They Are http://www.virginiaplaces.org/vacities/24river.html
steel, resources, rails
Railroads and motorized shipping overcome friction of distance overland and sea.
Rise of the manufacturing belt of the Northeast.
nuclear power, aerospace, electronics, petrochemicals
Rise of the sunbelt.
Production becomes more flexible and footloose
Example: change in automobile production
Multinational / Transnational Corporations have global operations
Global commodity chains
Examples: Mitsubishi and Volksvagen