Complex sentence: However, in 1893 the entire triangle (now widely known as Middle Row) was comprehensively cleared and redeveloped by Croydon Corporation, and this event pushed all street trading activities into Surrey Street.
Split into simpler sentences: However, in 1893 the entire triangle (by this date known as Middle Row) was comprehensively cleared and redeveloped by Croydon Corporation. This event pushed all street trading activities into Surrey Street.