Can someone help me complete the Pseudocode Practice

This is an ap world history question. i am working on a worksheet which has a vent diagram with each circle labeled either us or byzantine economy. the middle is the similarities. can someone explain to me the similarities and especially the differences between the two?

Which composer was renowned for creating expressive gregorian chants? a. hildegard of bingen b. carlo gesualdo c. josquin desprez d. guillaume de machaut

To earn college credit for ap courses that students take in high school they must