Complex sentence: Dominica and Guadeloupe both use the Antillean Creole language, which explains the musical collaborations between the two islands which allowed the importation to other islands and countries of the Caribbean.
Split into simpler sentences: Dominica and Guadeloupe both use the Antillean Creole language, which explains the musical collaborations between the two islands. This allowed its importation to other islands and countries of the Caribbean.