The term refrain -in a song or poem- refers to <em>a verse (or a line, or a group of lines) that appears where it divides into different sections.</em>
Explanation:
It is a literary device (usually used in poetry) that repeats, at regular intervals, in different stanzas. In music, the refrain differs from the chorus because the refrain is incorporated lyrically and musically within the verse itself.
The immediate result was that over 650 000 people were given the rights of voting, and numerous city-states were given the status of separate parliamentary boroughs.