How and why and where did civilization begin?

A good question.
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The lost pyramids of Caral


'Where' is well understood: Egypt, Mesopotamia, India, China, Peru and Central America.

'How' and 'why' are interlinked I think. If you want to do something you will try to find a way.

"Why are you doing this?"
  "Because I can better feed my family"
"How are you doing this?"
  "By coming to work here"

"Why are you doing this?"
  "Because it's safer"
"How are you doing this?"
  "As fast as I f**king can"