Final answer:
Pachacuti Inca instituted split inheritance in the 1450s to keep regional dominance.
Step-by-step explanation:
Pachacuti Inca instituted the practice of split inheritance in the 1450s to keep regional dominance. Split inheritance was a system in which the ruler's successor inherited the political leadership but not the wealth and resources. This ensured a continuous line of rulers while also preventing the consolidation of power and wealth by a single individual, thus maintaining regional balance and preventing the formation of strong rival factions.
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