Answer:
D) salt
Explanation:
The salt is a mineral that is of great biological importance for the people. Not just that it is important, it also makes the food taste much better when added in it. This made the salt very popular and demanded among pretty much every civilization or tribe, meaning that the ones that were controlling the trade with the salt were able to have a lot of profit of it. The kingdoms of northern Africa had that chance and they used it. They were in excellent location to control the trade routes through which the salt was passing and was traded, so they were able to get a lot of wealth even though they were not the main producers of it.
In his farewell Presidential address, George Washington advised American citizens to view themselves as a cohesive unit and avoid political parties and issued a special warning to be wary of attachments and entanglements with other nations.
Vasco de Game was the FIRST to reach india by sea, so he was indeed an explorer.
Henry the Navigator (no offense to him) was a joke. His title if fooling everyone, as he himself never even sailed once, he always sent others to do it for him (as he was a prince) This is your answer.
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Bartholomeu Dias sailed around the southernmost tip of africa in 1488, so he was an explorer too.
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Your answer is Henry
