The Evolution of Trading and Military Strategies:

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This file contains the simulation figures from
Rousseau and Cantor (2003). The remaining figures
appear in the text of the paper.
The Evolution of Trading and Military
Strategies An Agent-Based Simulation 1 August
2003 David L. Rousseau Assistant
Professor Department of Political Science 235
Stiteler Hall University of Pennsylvania Philadelp
hia, PA 19104 E-mail rousseau_at_sas.upenn.edu Phone
[phone] Fax [phone] and Max
Cantor Department of Political Science and the
School of Engineering and Applied
Science University of Pennsylvania Philadelphia,
PA 19104 E-mail mxcantor_at_sas.upenn.edu Paper
prepared for the annual meeting of the American
Political Science Association, August 28-31,
2003, Philadelphia, PA. Please send comments to
the first author.
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Figure 8 Output From The Baseline Model
A) Distribution of traits in the landscape at
iteration 1000 (Attribute1 shown in black).
B) Distribution of War shown by black lines
connecting nodes.
C) Distribution of Trade shown by green lines
connecting nodes.
D) Spatial Distribution of Wealth (Blue above
1000 and Red Below 1000 Power Unites)
F) Change in the Percentage of States Having
Traits 1, 2, 12, 13 Across Time.
G) Average Number of Wars, Trade, and Gini
Coefficient Across Time
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Figure 10 H1 Increasing the Gains From Trade
A) Distribution of traits in the landscape at
iteration 1000 (Attribute1 shown in black).
B) Distribution of War shown by black lines
connecting nodes.
C) Distribution of Trade shown by green lines
connecting nodes.
D) Spatial Distribution of Wealth (Blue above
1000 and Red Below 1000 Power Unites)
F) Change in the Percentage of States Having a
Traits 1, 2, 12, 13 Across Time.
G) Average Number of Wars, Trade, and Gini
Coefficient Across Time
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Figure 11 H2 Offense Dominance
A) Distribution of traits in the landscape at
iteration 1000 (Attribute1 shown in black).
B) Distribution of War shown by black lines
connecting nodes.
C) Distribution of Trade shown by green lines
connecting nodes.
D) Spatial Distribution of Wealth (Blue above
1000 and Red Below 1000 Power Unites)
G) Average Number of Wars, Trade, and Gini
Coefficient Across Time
F) Change in the Percentage of States Having a
Traits 1, 2, 12, 13 Across Time.
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Figure 12 H3 Permitting Trade with Non-Neighbors
A) Distribution of traits in the landscape at
iteration 1000 (Attribute1 shown in black).
B) Distribution of War shown by black lines
connecting nodes.
C) Distribution of Trade shown by green lines
connecting nodes.
D) Spatial Distribution of Wealth (Blue above
1000 and Red Below 1000 Power Unites)
G) Average Number of Wars, Trade, and Gini
Coefficient Across Time
F) Change in the Percentage of States Having a
Traits 1, 2, 12, 13 Across Time.
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Figure 13 H5 Altering the Exit Payoffs
Baseline Model
0.10 Exit Payoffs
0.90 Exit Payoffs
Wars Line Connections
Trades Line Connections
Gene Prevalence Over Time
Trade, War and Inequality Across Time
Power Level Relative to Start
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Figure 14 Absolute versus Relative Payoffs in
the Trade Game
Absolute Payoffs
Relative Payoffs
Wars Line Connections
Trades Line Connections
Gene Prevalence Over Time
Trade, War and Inequality Across Time
Power Level Relative to Start
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Figure 15 Rapid Learning Representative Runs
A) Distribution of traits in the landscape at
iteration 1000 (Attribute1 shown in black).
B) Distribution of War shown by black lines
connecting nodes.
C) Distribution of Trade shown by green lines
connecting nodes.
D) Spatial Distribution of Wealth (Blue above
1000 and Red Below 1000 Power Unites)
G) Average Number of Wars, Trade, and Gini
Coefficient Across Time
F) Change in the Percentage of States Having a
Traits 1, 2, 12, 13 Across Time.
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Figure 16 Simultaneously Raise Trade Benefits
and War Costs
A) Distribution of traits in the landscape at
iteration 1000 (Attribute1 shown in black).
B) Distribution of War shown by black lines
connecting nodes.
C) Distribution of Trade shown by green lines
connecting nodes.
D) Spatial Distribution of Wealth (Blue above
1000 and Red Below 1000 Power Unites)
G) Average Number of Wars, Trade, and Gini
Coefficient Across Time
F) Change in the Percentage of States Having a
Traits 1, 2, 12, 13 Across Time.
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Figure 17 Simultaneously Allow Rapid Learning,
Increased Trade Benefits, Increased War Costs
A) Distribution of traits in the landscape at
iteration 1000 (Attribute1 shown in black).
B) Distribution of War shown by black lines
connecting nodes.
C) Distribution of Trade shown by green lines
connecting nodes.
D) Spatial Distribution of Wealth (Blue above
1000 and Red Below 1000 Power Unites)
G) Average Number of Wars, Trade, and Gini
Coefficient Across Time
F) Change in the Percentage of States Having a
Traits 1, 2, 12, 13 Across Time.
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Figure 18 Relative Gains, Rapid Learning,
Increased Trade Benefits, Increased War Costs
A) Distribution of traits in the landscape at
iteration 1000 (Attribute1 shown in black).
B) Distribution of War shown by black lines
connecting nodes.
C) Distribution of Trade shown by green lines
connecting nodes.
D) Spatial Distribution of Wealth (Blue above
1000 and Red Below 1000 Power Unites)
G) Average Number of Wars, Trade, and Gini
Coefficient Across Time
F) Change in the Percentage of States Having a
Traits 1, 2, 12, 13 Across Time.