Journal on Policy & Complex Systems Volume 2, Number 1, Spring 2015 | Page 59

A Complex Adaptive Systems Analysis of Shaka Zulu and the Mfecane
followed the sharp decline in 1804 , thus the presence of a sizable military presence ( achieved at the time of the second major drought ) was a necessary condition for Shaka ’ s military successes .
Great Man – Drought
1794 3,900 100 1795 12,499.5 99.7436 1796 21,313.99 99.30639 1797 30,348.84 98.68385 1798 39,609.56 48.93567 1799 49,101.8 23.96423 1800 58,831.34 22.75743 1801 68,804.13 21.34606 1802 79,026.23 19.72501 1803 89,503.88 17.88904
The final node of activity is trade . Trade in luxury items had flourished in Africa as early as from the fifth century ( Gluckman , 1960 ). Trade with the Portuguese colony of Delagoa Bay involved exports of ivory in exchange for “ beads , cloth , and brass bangles ” ( Omer-Cooper , 1977 ). European demand for ivory rose sharply in the last half of the eighteenth century ( Manson , 1995 , p . 358 ). Control of the trade and increased hunting requirements to meet heightened European demand for ivory caused the rulers to expand their control over the young men who hunted elephant to increase and regularize ivory production ( Omer-Cooper , 2001 ). Excessive hunting of the elephant herds led to a sharp decline in available ivory resources and the need to find another product to market if trade was to continue ( Perry , 1999 ).
Demand for cattle and meat had been strong since early in the eighteenth century ( Penn , 1987 ). Hedges posited a transition to major reliance on cattle trade replacing the diminished ivory trade ( Perry , 1999 ).
1,600 Start – Drought
1804
1,600
100
1805
1,640
99.918
1806
1,681
99.83395
1807
1,723.025
99.7478
1808
1,766.101
99.65949
1809
1,810.253
99.56898
1810
1,855.509
99.47621
1811
1,901.897
99.38111
1812
1,949.445
99.28364
1813
1,998.181
99.18373
1814
2,048.135
99.08132
1815
2,099.339
98.97636
1816
2,151.822
98.86876
1817
2,205.618
98.75848
1818
2,260.758
98.64545
1819
2,317.277
98.52958
1820
2,375.209
98.41082
1821
2,434.589
98.28909
1822
2,495.454
98.16432
1823
2,557.84
98.03643
1824
2,621.786
97.90534
1825
2,687.331
97.77097
1826
2,754.514
97.63325
1827
2,823.377
97.49208
1828
2,893.962
97.34738
1829
2,966.311
97.19906
1830
3,040.468
97.04704
1831
3,116.48
48.44561
1832
3,194.392
48.28589
1833
3,274.252
48.12218
1834
3,356.108
47.95437
1835
3,440.011
47.78237
1836
3,526.011
47.60607
1837
3,614.161
47.42536
1838
3,704.515
47.24014
1839
3,797.128
47.05028
1840
3,892.057
46.85568
1841
3,989.358
46.65621
1842
4,089.092
46.45175
1843
4,191.319
46.24219
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