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Which element is the main element found in organic compounds, thus, essential to all known life on Earth?

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Which of the following is a similarity between Christianity in western Europe and Islam in the Middle East before 1000 C.E.?A.Both were strongly influenced by Judaism.B.Both spread primarily by missionaries along trade routes.C.Both encouraged the spread of literacy.D.Both were led by one individual with supreme religious authority.

Which of the following best characterizes the political structures of the Greek city-states of Sparta and Athens in the classical period (circa 510 B.C.E. to 323 B.C.E.) ?A.Sparta granted citizenship to women, banished slavery, and developed an early form of democracy; Athens granted women citizenship but kept the majority of its population as slaves and lacked institutions for citizen participation in government.B.Sparta was a military encampment that required citizens to serve as soldiers most of their lives; Athens was a limited democracy in which citizens participated in government, including the military, but performed other work too.C.Both Sparta and Athens were peaceful democracies that had wide participation in the polis (city-state) by all men who were property owners.D.Both Sparta and Athens were military dictatorships that lacked political structures through which citizens could participate in running the state or making decisions about waging war.

Which of the following most likely led to the shift in human societies from hunting and gathering to agriculture beginning circa 8,000 B.C.E. ?A.Development of metallurgyB.Larger-capacity braincasesC.Climate changeD.Spread of languageCorrect

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