The settlers moved into the unknown, leaving the familiar behind.
Explanation:
A compound verb is a verb that comprises of more than one word working collectively. In such sentences, one verb proceeds the another. The verbs in such sentences are joined with the help of the conjunctions. In the given sentence, a prepositional verb has been used. 'Moved into' is the example of the prepositional verb that had been used to form the complete sentence.
