Complex sentence: In 1994, Woolco became Wal-Mart, around the time discussions regarding amalgamation with Circle Park Mall began in earnest; during the mid- 90s Wildwood Mall had a large number of vacancies.
Split into simpler sentences: In 1994, Woolco became Wal-Mart, around the time discussions regarding amalgamation with Circle Park Mall began in earnest. During the mid- 1990s, the Wildwood Mall had a large number of vacancies.