Complex sentence: With the Danish colonization of Greenland by Hans Egede, Danish became the administrative and religious language there, while Iceland and the Faroe Islands had the status of Danish colonies with Danish as an official language up until the mid 20th century.
Split into simpler sentences: With the Danish colonization of Greenland by Hans Egede, Danish became the administrative and religious there. Just as Iceland and the Faroe Islands, had status as Danish colonies with Danish as an official language up until the mid 20th century.