Answer:
a and d
Explanation:
it has a harsher climate and has a mountainous terrain
Answer: okay
Explanation:The Harappan civilization once extended across the plains of the Indus River from the Arabian Sea to the Ganges. The civilization developed about 5,200 years ago, and slowly disintegrated between 3,900 and 3,000 years ago populations largely abandoned cities, migrating toward the east.
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Nubia is ancient region in northeastern Africa, extending approximately from the Nile River valley (near the first cataract in Upper Egypt) eastward to the shores of the Red Sea, southward to about Khartoum (in what is now Sudan), and westward to the Libyan Desert. Nubia is traditionally divided into two regions
