Here are the answers to your questions:
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What geographic feature might have helped rulers unite Upper and Lower Egypt?
- The Nile River: The Nile served as a crucial transportation route and provided the resources necessary for agriculture, which helped to unite the two regions.
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What body of water was important to both Mali and Songhai?
- Niger River: The Niger River was essential for trade, agriculture, and transport for both the Mali and Songhai empires.
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What is the connection between high population growth rates and the percentage of people under the age of 25?
- Countries with a higher population growth rate also have a higher percentage of people under the age of 25: This is typical in developing countries where high birth rates lead to a larger young population.
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