In 1857, what did the Supreme Court decide? A) that slaves in free states had the same rights as anyone else

B) that slaves are merely the property of their owners

C)that slaves could vote and serve on juries

D)that slavery must be abolished​

B.

Explanation:

This was decided in the Dred Scott case.

true true true true that all

offline recommendation systems option b

because recommendation systems produce a list of two ways

1. through collaborative filtering

or

2. through content-based filtering