Answer: The system of cooperation known as feudalism ended around the 15th century
Explanation:
<span>an encyclopedia. hope it helps
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Euclid studied how points lines angled planes relate to one another
It would be the "c. Unified Command" system that provides a command structure to enable agencies with different legal, jurisdictional, and
<span>functional responsibilities to coordinate, plan, and interact effectively on scene while maintaining their own authority, responsibility, and accountability, since power is ultimately delegated to different branches in this system. </span>