write a story that includes 'it suddenly became clear that they weren't as lazy as everyone thought they were

Is the sentence the refree blew her whistle and both teams rushed onto the field a coumpound or simple sentence

(1) fire extended humans’ geographical boundaries by allowing them to travel into regions that were previously too cold to explore. (2) it also kept predators away, allowing early humans to sleep securely. (3) fire, in fact, has been a significant factor in human development and progress in many ways. (4) other obvious benefits of fire are its uses in cooking and in hunting. (5) probably even more important, however, is that learning to control fire allowed people to change the very rhythm of their lives. (6) before fire, the human daily cycle coincided with the rising and setting of the sun. (7) with fire, though, humans gained time to think and talk about the day’s events and to prepare strategies for coping with tomorrow. the sentence that expresses the main idea is: (type the number of the sentence. then click “go.”)

Romeo and juliet have fallen in love, even though their families despise one another. based on the excerpt, what are the two main purposes of this prologue?