Scientist who study the ocean floor are called" oceanographer"
hope i helped
World war 2 represents a turning point in modern world history because it <em>remains the only war to use nuclear weapons in the history of armed conflict</em>. World War 2 was more advanced in military technology example, aerial bombing and the dropping of the atomic bombs on Hiroshima and Nagasaki killing 129,000–226,000 people, most of whom were civilians.
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To be honest I think it was more of the physcological things. The physiological part comes with the fact that when someone that seems dominant in an abusive relationship, the one being "dominated" you tend to think you are weaker, and that any attempt to get out or even getting out will not help. They saw more slaves getting captured rather than actually escaping, so add that to the fact that they tell you if you escape "we will do", fill in the blank. There was also the fact that white slave owners had guns, which might make it seem like your powerless.
Explanation:
BTW if i were them I would've used the term strength in numbers, maybe not in all cases would it work, but if executed right it could most of the time
Long-distance trade played a major role in the cultural, religious, and artistic exchanges that took place between the major centers of civilization in Europe and Asia during antiquity. Some of these trade routes had been in use for centuries, but by the beginning of the first century A.D., merchants, diplomats, and travelers could (in theory) cross the ancient world from Britain and Spain in the west to China and Japan in the east. The trade routes served principally to transfer raw materials, foodstuffs, and luxury goods from areas with surpluses to others where they were in short supply. Some areas had a monopoly on certain materials or goods. China, for example, supplied West Asia and the Mediterranean world with silk, while spices were obtained principally from South Asia. These goods were transported over vast distances— either by pack animals overland or by seagoing ships—along the Silk and Spice Routes , which were the main arteries of contact between the various ancient empires of the Old World. Another important trade route, known as the Incense Route , was controlled by the Arabs, who brought frankincense and myrrh by camel caravan from South Arabia.
