What was the position of the federal government regarding slavery during Nat Turner's Rebellion?The federal government surpressed the rebellion by...

I assume that you are asking why the federal government
helped to suppress the rebellion.  If so, the answer is that slavery was completely
legal in 1831, which was when Turner's rebellion happened.  The federal government did
not prohibit slavery in any existing states, though it had specified (in the Missouri
Compromise) which territories could and could not have
slavery.

In 1831, a slave living in a slave state was
legally the property of his or her owner.  Slavery was, in states where it was legal,
just as legal as owning a horse or a cow.  Because of this, it is not surprising that
the federal government would help to put down a slave rebellion.  After all, the
government was simply helping to uphold the law.

Slavery
was completely legal in Virginia and many other states.  The federal government had no
position on the legality of slavery in 1831 except for the fact that it accepted the
laws of the various states on the issue.