The answers are 3. Mechanical union and 4. Industrial union
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Explanation:
They are the one's selling and buying Slaves.
It was Martin Luther (1483 – 1546). A old catholic monch. It is generally believed that the reformation begun when he pinned his 95 theses in 1517 to a church in Wittenberg.
European countries during the "Age of Discovery" were looking for alternative routes to Asia because they were seeking a faster and more inexpensive route to reach Asia rather than trading by land through the Middle East and Asia.