Complex sentence: In other cities apartment building was almost solely restricted to public housing, particularly in Melbourne where a huge number of hi-rise housing commission flats were built between the 1950s and 1970s by successive governments as part of an urban renewal program.
Split into simpler sentences: In other cities apartment building was almost solely restricted to public housing. Public housing in Australia was common in the larger cities, particularly in Melbourne where a huge number of hi-rise housing commission flats were built between the 1950s and 1970s by successive governments as part of an urban renewal program.