The correct answer for the given question above would be the third option. The Song Dynasty as compared to the Tang Dynasty is that, the Song Dynasty was smaller than the Tang Dynasty, but lasted for a slightly longer period of time. The Song Dynasty didn't expand much, whereas, the Tang Dynasty expanded to modern borders. Hope this answer helps.
Louis Armstrong.
Duke Ellington.
Charlie Parker and Dizzy Gillespie
Miles Davis
A nation's "sovereignty" allows it to exercise its political power and authority, since without sovereignty it is unlikely that the nation would be able to keep out outside powers and influence.
