Complex sentence: In the 1940s-1950s, old worn down houses that served as the overcrowded dwellings of the lower class were demolished, and instead people were offered modern housing with bathrooms and windows to let light into every room, so called "funkis".
Split into simpler sentences: In the 1940s-1950s, old worn down houses that served as the overcrowded dwellings of the lower class were demolished. Instead, people were offered modern housing with bathrooms and windows to let light into every room, so called "funkis".