Which assumption about America lies at the heart of Kennedy’s speech?

How did emperor justinian’s review of roman laws create a more efficient legal system? a.he got rid of outdated and repetitive laws.b.he ranked the laws according to importance.c.he created new laws to address modern situations.d.he combined minor laws into stricter categories.ill mark brainliest

This pie chart shows statistics related to the world's population. a pie chart like this one is most for making predictions about the future. showing how parts make up a whole. presenting amounts over a period of time. comparing information from different sources.

Why are nation-states difficult to create?