As described in the thirteenth amendment, involuntary servitude was
a way for formerly enslaved people to acquire land over time.
a way for people to earn a living in a variety of low-paying jobs.
a system of making people work without pay or against their will.
a system that allowed workers to choose a job or an employer.

What two different approaches did the knights of labor and the american federation of labor take in building a union organization? a) the knights of labor accepted only unskilled workers; the american federation of labor accepted only skilled workers. b) the knights of labor accepted skilled and unskilled workers; the american federation of labor accepted only skilled workers.c) the knights of labor refused to accept african american or chinese workers; the american federation of labor accepted all workers.d) the knights of labor accepted workers from a single industry; the american federation of labor accepted workers from several industries.