> if in the united states we refer to our prisons as 'correctional' facilities, what quantitative correction could require nearly a century of internment?

It's only punishment, there is no correction at all.

> if by any study it costs nearly 40,000 dollars to house a prisoner for one (1) year, was the night watchmans life truly worth 3.2 million dollars of Connecticut taxpayers money?

Can we please not value people's life in money? Because if we can then slavery would be justified.

> what meaningful value was extracted from his slave labor? was it enough to offset even a fraction of the internment cost?

Ditto.