What does marx mean when he says "the proletarians have nothing to lose but their chains."?

How are diamonds and graphite the same? how are they different? a. both diamonds and graphite are made entirely out of carbon. they are different because the carbon atoms are arranged differently with a more three-dimensional structure in diamonds and flat layers in graphite. b. both diamonds and graphite have atoms that are arranged with flat layers. they are different because only graphite are made entirely out of carbon. c. both diamonds and graphite have atoms that are arranged with three-dimensional structures. they are different because only diamonds are made entirely out of carbon. d. diamonds and graphite have no similarities. they are different because the carbon atoms are arranged differently with a more three-dimensional structure in diamonds and flat layers in graphite.

What types of subjects did public high schools in the 1900s emphasize and why

Pls me! the most famous slave rebellion in the south was led by in 1831. a. toussaunt louverture b. wat tyler. c. nathanial bacon. d. nat turner.