C.
The document is advertising that slaves will be sold.
Civilizations developed around rivers because their waters provided places to hunt and fish.
Also, as the rivers flooded, the lands around them became fertile. This allowed them to support farming.
In addition, because they provided a steady supply of drinking water.
Moreover, goods and people could be transported easily
Finally, River valleys not only have water, they also often have a broad, flat floodplain that is readily adapted to agriculture.
Answer:
1st one: C, you are correct!
2nd one: B is a possiblity, water-dependent thermal power plants generate the majority of the world's electricity—more than 81 percent. It would most likely be that over C, most people nowadays get water from their frig, or Walmart, and sometimes sinks.
