the answer is Nullification
A, Brazil, The immigration and nationality act of 1952 plays called us on the immigration people from Brazil
If you are asking if the statement is true, then it is. Odoacer, whose father was a commander in Attila the Hun's army, sent a message to Constantinople after Romulus Augustulus was deposed that the Roman empire needed only one Emperor. He then proclaimed himself as Italy's representative. Odoacer felt that he reunited the Roman Empire and he became the last Western Roman empire's ruler.
The answer is Civil War. It was battled over the subject of national supremacy versus states' rights. It established that the national government was highest or supreme, its sovereignty or dominance derived directly from the people, and therefore the states could not legally separate from the Union.