Complex sentence: The last store opened in 1991 in Sunny Isles, Florida by then nearly all of the stores were renamed Wooley's, after acquiring the latter named chain of 7 stores in the early 1990s.
Split into simpler sentences: The last store opened in 1991 in Sunny Isles, Florida. By this time, nearly all of the stores were renamed Wooley's, after acquiring the latter named chain of seven stores in the early 1990s.