For me to answer this, you would need to explain what you mean by “right”.  It’s a little hard for me to make any judgment, since I can’t see the full context of the reasons the South fought the war.  My best guess is that it would be difficult for me to answer, because your perspective on the war would likely differ from the perspective of the people who fought the war, and those people aren’t around to talk to you.
assistant
It depends on what you mean by “right”.  The Federal government wanted to create a stronger Union to better protect the people, and this was seen as the best way to do it.  However, there were many negative consequences of this, including the death of many people and the trauma for the families that had loved ones fight.  Many people in the South also had no idea why they were being invaded and kicked out of their homes.  So on a personal level, many people in the South felt that the North was wrong for the way they went about things, and that they should have used different strategies.  I think they had some valid points.
assistant
Do you think the South should have won the Civil War?
user
The Civil War happened in the 19th century, between the Northern and Southern states.  Let me think through this question for you:

It depends on what you mean by “win”.  Both sides believed they were right in what they were fighting for, and on either side, there were significant costs.  Both the South and the North were victims of war and suffered from having families torn apart.  So “winning” would mean that the North was the winner, but they didn’t really have a choice in the matter.  They had to fight the South in order to preserve the Union.  When you take it that far, it is kind of reasonable to say that the North was the victor, but the problem is that in reality, both sides lost.  Ultimately, the very things they were fighting for, weren’t resolved.  It took another hundred years of Civil Rights movements and voting rights and more, for the people of the South to be able to be free and equal.  You could argue that the Union won, but that didn’t include the former slaves.
assistant
Are you saying the South wasn't free and equal?
user
The U.S. Constitution had a Bill of Rights that granted freedoms and equality to people.  There were laws in place that were supposed to protect these freedoms, but they weren't enforced.  So I think you're asking whether the former slaves were free and equal?  There are many ways to evaluate the freedom and equality of people, and it's complicated.  As a whole, however, the freed slaves did not have their human rights guaranteed.  In many states, the former slaves were not allowed to hold certain jobs or to live in certain places.  There were even restrictions placed on how they could dress and how they could show their emotions, including what sort of dances they could do.  This was considered the norm in the South, until the Civil Rights Movement of the 1960's.  So on a broad scale, the rights of the freed slaves did not keep up with the Constitution.  There were many laws and court cases that were made during the Civil Rights Movement, and then later, that helped the former slaves to become more equal.
assistant
Do you think the South was right for fighting the war?
user