Dude, that's strait-up cheating. That's not what this site is for. You should at least try before asking for help.
Answer: At the time of Justinian's death, the Byzantine Empire reigned supreme as the largest and most powerful state in Europe. ... During the seventh and eighth centuries, attacks from the Persian Empire and from Slavs, combined with internal political instability and economic regression, threatened the vast empire.
The correct answer is <span>c.laws passed in one state are honored by other states.
This is done to prevent states having feuds with one another and to prevent a civil war or anything similar. This applies to laws unique to the state since federal laws are the same for all states. This for example is the right to have a death penalty. Other states have to honor the fact that there's such a law and can't bother the state about it since it's not something found in a federal law.</span>