About what fraction of the peopulation in 1837 were enslaved people

The sixth amendment of the u.s. constitution guarantees the right to which of the following?

According to the sixth amendment, what can the woman do to support her court case? 1/ she can hire a different lawyer. 2/she can request that the trial be moved to a different state. 3/ she can require the witnesses to testify. 4/ she can refuse to testify.

How did the new working class of the industrial revolution differ from the working classes of the earlier, farm based economy?