Final answer:
Studying Harkhuf's account of Nubia would allow historians to investigate the characteristics of Egyptian and Nubian economies and the common features of Egyptian and Nubian architecture.
Step-by-step explanation:
Studying Harkhuf's account of Nubia would allow a historian to investigate two main topics:
- The characteristics of Egyptian and Nubian economies: Harkhuf's account mentions that Egypt traded with Nubia for resources like gold, ivory, and slaves. This trade relationship impacted the economies of both regions.
- Common features of Egyptian and Nubian architecture: The excerpt states that Egypt left a deep mark on Nubian culture, including architecture. By studying Harkhuf's account, a historian could explore the architectural similarities and influences between the two civilizations.