Egypt was motivated to conquer nubia because of a desire for

Egypt was motivated to conquer Nubia because of a desire for gold.

Explanation:

The two regions Egypt and Nubia had periods of peace and war. In ancient days, both regions had peaceful culture and cooperation, traded for various goods like gold, copper, stone vessels etc. For Egypt, Nubia was the gateway to the goods of Africa, gold, ebony, ivory. The transactions between two regions changed from trade to political issues when the Nubian prince pushed north to capture Egypt from Libyan control to establish their capital. This motivated Egypt to conquer Nubia.

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