I believe that it would be the second option.
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They hoped to repeat the success of Spaniards who found gold in South America. In 1607, 144 English men and boys established the Jamestown colony, named after King James I. The colonists were told that if they did not generate any wealth, financial support for their efforts would end.
First Arabs came into North Africa, then gold-salt trade flourishes on the Trans-Saharan route, then Islam spreads to Western and Southern Africa, then all of North Africa comes under Muslim rule