A high demand item with a low supply will have a higher price than a low demand item with a high supply.
The exchange that took place during this time was called the Columbian Exchange
"Muhammad left Mecca, in 622 CE, after he was warned about a plot to assassinate him. The migration of the Prophet and his followers from Mecca to Medina is known as Hijra or Hegira''.
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The number of buyers that are able and willing to buy goods affect the demand.
Answer:
1st many people died and it was even contagious like the black pledge so people wear mask people had to quarantine to spread by people traveling alot.