Complex sentence: In 1557, at a time when many in England perceived that vagrancy was on the rise, the City of London reopened the Bridewell as a warehouse for vagrants arrested within the city limits.
Split into simpler sentences: In 1557, many in England perceived that vagrancy was on the rise. That same year, the City of London reopened the Bridewell as a warehouse for vagrants arrested within the city limits.