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The most accurate answer is
<span>B.
Twentieth-century archaeologists unearthed many artifacts near the Indus River.
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Not to much if you take into account the factors of underdeveloped economy at the time, trade was a means of living, and the classes standings played a role in where you stood in a economy
They didn't need to pay any expenses whatsoever. They were the main ones who could hold vital positions. Officers in the armed force. Nobles controlled peasants. They didn't need to pay most duties and gathered tolls from individuals utilizing streets and markets. Numerous nobles and clergy lived in awesome extravagance in chateaux and castles.
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