Answer:
Some common elements of Black Codes were: Race was defined by blood; the presence of any amount of black blood made one black. Employment was required of all freedmen; violators faced vagrancy charges. Freedmen could not assemble without the presence of a white person.
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The command economy is controlled by a central force like the government. Market economies are controlled by market forces
Back in 1615 when it was widely accepted that the earth was the center of the galaxy, Galileo discovered that we revolved around the sun in year long cycles along with other planetary objects. He was put in house arrest for 9 years because of this because it was considered a heresy. He also invented the telescope and was the first to observe the largest of Jupiter's moons.
