<span>the person that first introduced that the sun is center of the universe is: Nicolaus Copernicus
his theory is known as the heliocentric model.
Because of this theory, he got a lot of criticism and hostile treatment from various religious community that believed that the earth is the center of the universe</span>
Answer:
Camel Caravans often carried wool and cotton fabrics, tea, and salt.
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Merchant leaders, wealthy merchants , land owners