One thing I've wondered about, is the reference to people in the US living in "trailers" (sometimes referred to as "single-wide" or "double-wide"). I'm a bit confused as to what sort of living space this provides, as "trailers" here tend to translate as caravans, and whilst you could live in them I shouldn't think it would be very convenient as a long term thing, let alone having a family in one. They're generally used for holidays. So, I suspect that "trailers" are something altogether different?
Can anyone enlighten me, possibly with pictures, so I get a better idea of what they're like? Are they typically one one's own land, or (similar to caravan parks here) on rented land? Can they be easily moved?