Later on, I started thinking about how we occupy space like how we live, work, act etc.  Then I had an idea for comparing how humans occupy space with how animals occupy space.  Animals live in harmony with the world while humans are destroying it bit by bit with pollution, burning fossil fuels, wars etc.  I abandoned this idea however as it was too broad.  I needed something more narrow and specific to a certain time.  That's when I started looking through my family's history.