The Great Zimbabwe (11th - 15th centuries), whose ruins are the largest in Africa south of the Sahara, were a cattle-herding people, who developed metal-working and had exceptional architectural skill.
The Bunyoro-Kitara were principally cattle herders who developed an empire thanks to their control of a valuable source of salt. Their kingdom rose to dominate the region, with smaller kingdoms around.
The structure of government under the Articles of Confederation is well explained by the Articles of Confederation gave more power to bigger states than to smaller states.
The United States system is well driven by the set of rules and principles set by the legislatures who are always providing the best of knowledge to enhance the states capacity to cope with different situations across time and generations.
