Final answer:
The folk dance made up of long lines of couples is called a line dance. In line dances, the dancers stand side by side in a row and perform synchronized steps together.
Step-by-step explanation:
The folk dance made up of long lines of couples is called a line dance. In a line dance, the dancers stand side by side in a row, with each person usually facing in the same direction. They perform a sequence of steps together, creating a synchronized and visually appealing performance. Line dances are popular in many cultures and are often performed at social events and celebrations.