1. They were on fireplaces because in 1850 they were heating out.
2. The 1950s semi-detached got a garage because there are more cars on the roads in the 1950s.
3. Young people like living in flats in the 1990 because they like living near the city centre and the houses are big but not expensive.
4. Semi-detached houses have neighbours on one side.
Coroana pls :D