~Hello there! ^_^
Your question: What physical feature marks the eastern boundary of the cultural subregion known as European Russia..?
Your answer: The Ural Mountains physical feature marks the Eastern boundary o f the cultural subregion known as European Russia.
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The sun (solar energy)
The Earth (geothermal) this can also be known as internal
The answer is Option A.
People revolted against the ruler's cruel ways and overthrew the Qin government.
Im sire the answer for this is letter C “territory”
