Original: In 1993, Barisal division was split off from Khulna and again in 1998, Sylhet division was split off from Chittagong giving rise to the 6 divisions in the country.
Simplified: In 1993, Barisal division was split off from Khulna and again in 1998, Sylhet division was split off from Chittagong giving rise to the 6 divisions in existence today.