Unlike the other colonists, who eventually melted into the culture, the Cajuns kept to themselves in the bayou, retaining their 17th-century language and customs.
Less than half of the colonists did not melt into the culture just like the Cajuns that kept to themselves in the bayou.
mnli hypothesis: Less than half of the colonists did not melt into the culture just like the Cajuns that kept to themselves in the bayou. premise: Unlike the other colonists, who eventually melted into the culture, the Cajuns kept to themselves in the bayou, retaining their 17th-century language and customs.