I believe it would be B due to the fact that certain time periods being and end at certain times
Penn limited his own power and established an elected assembly. He promised religious freedom to all Christians.
The civilization of Ancient Greece emerged into the light of world history in the 8th century BC. Normally it is regarded as coming to an end when Greece fell to the Romans, in 146 BC. However, major Greek (or “Hellenistic”, as modern scholars call them) kingdoms lasted longer than this.
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Answer: The Cambrian Period
Explanation:
The answer is C. the soviet union faced serious economic and political problems.