Complex sentence: It was also part of a slum-clearance measure, to push impoverished workers out of the city centre although the street's construction was stalled by legislation requiring rehousing some of these displaced residents, overcrowding persisted.
Split into simpler sentences: It was also part of a slum-clearance measure, to push impoverished workers out of the city centre. Although the street's construction was stalled by legislation requiring rehousing some of these displaced residents, overcrowding persisted.