Which technological developments are NOT associated with the Indus valley
civilization?

A. Precisely planned cities
B. Plumbing and sewage systems
C. Cuneiform writing
D. As yet undeciphered writing system

while it was true that the cotton gin reduced the labor of removing seeds, it did not reduce the need for slaves to grow and pick the cotton.

explanation:

before eli whitney's invention of the cotton gin, picking and cleaning cotton was a slow, labor-intensive job. workers, usually slaves, had to pick the seeds from the cotton fibers by hand. this invention made it possible to grow large amounts of cotton on big farms and make money.

you didn't list the options. however, a few communist countries today are: the people's republic of china, north korea, and cuba.

this is true hope this

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