Why summer represent as happiness and winter as bitterness?

Which of the following events of the story actual occurs first in the sequence of events

The rich natural resources made the sacramento valley a "garden of eden." permanent villages were established about 8,000 years ago.which choice combines these two sentences from paragraph two to achieve a coherent flow of ideas? a) the rich natural resources made the sacramento valley a "garden of eden" and permanent villages were established about 8,000 years ago. b) permanent villages were established about 8,000 years ago and the rich natural resources made the sacramento valley a "garden of eden." c) the rich natural resources made the sacramento valley a "garden of eden; " and so the permanent villages were established about 8,000 years ago. d) because of the rich natural resources which made the sacramento valley a ‘garden of eden,’ native americans established permanent villages there 8,000 years ago.

What is the meaning of 'aesthetic'?