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Your question is unclear, but the heliocentric theory is the theory that the sun is at the center of our solar system, which it correct. It became believed over the old theory, the geocentric theory, that Earth is at the center of our solar system.
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Answer: AIDS
The doctors have been looking for a cure for Acquired Immune Deficiency Syndrome, most widely known as AIDS since 1981. There has been vaccines for polio while other treatments for cancer however, there is way fewer cure for AIDS since then.
The Populist Party was made for farmers, to ensure their equality, and wealth seeing as most of American's food came from them. At that time crop prices were dropping, and the standard of living of said farmers diminished.
Answer: Grapes, oil, and grain were a few of the major exports. From these crops, items such as olive oil, wine, and cereals were also made and exported. Other exports included pottery and paper.
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Answer:
federalism. A system in which power is divided between the national and state governments. division of powers. Also called the separation of powers.
Four essential features: Population, Territory, Sovereignty, and Government.
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