What obstacle was faced by the union pacific railroad workers but not the central pacific workers?

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 a.he got rid of outdated and repetitive laws.b.he ranked the laws according to importance.c.he created new laws to address modern situations.d.he combined minor laws into stricter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

Ineed on 2-4 i want y’all to reply to this question so i can turn this into my teacher tomorrow

This excerpt reveals that elinor is select all that apply