In third world countries, rivers are just as essential as they were since the dawn of civilizations. In modern countries, rivers serve as a waterway for transportation, human recreation, and sometimes drinking water.
Alexander the Great, conquered Persia, India, Greece and Egypt got the idea from Greece
I dont know about this one go check answers.com
Answer B: They viewed them as property rather than as people
The Middle Passage was the stage of the triangular trade in which millions of Africans were forcibly transported to the New World as part of the Atlantic slave trade. Ships departed Europe for African markets with manufactured goods, which were traded for purchased or kidnapped Africans, who were transported across the Atlantic as slaves; the slaves were then sold or traded for raw materials, which would be transported back to Europe to complete the voyage. Voyages on the Middle Passage were large financial undertakings, generally organized by companies or groups of investors rather than individuals
Slaves' treatment was horrific because the captured African men and women were considered less than human; they were "cargo", or "goods", and treated as such; they were transported for marketing.
Government intervention and Disequilibrium