Answer:
The earliest civilizations to develop were all situated near major rivers. These rivers provided a regular water supply and a means of transportation. The animals that flocked to the rivers to drink were a source of food... Thus they were able to produce enough food to support increasingly large populations.
Hope that helps?
The correct answer to this open question is the following.
Existentialism, anti-colonialism, and the quest for personal freedom influenced the landmarks of the last fifty years in that they were the dominant concepts that supported Neoliberalism, as the imperative economic system in modern western societies.
During these last fifty years, those concepts shaped the thinking of corporate America. An economic and political system that promoted free market, where corporations became so rich, countries signed free trade agreements, multinational companies opened branches in many third world companies, and unfortunately, it never impacted in a positive way to the working class, just benefited the rich people.
That is why today we see so many protests and demonstration in many countries, including the US, where people are demanding drastic changes after the US Crisis of 2008, when the federal government decided to support and rescue the big bankers and corporations, instead of supporting the interests of the common American citizen.
The cause would be slaves were being treated badly. Used for bad things. Got treated bad
Affect would be the slaves running away. Using the underground railroad
There weren't a lot of workers to build the tracks so they lost money do to the "wasted material"
