D. ancient seas because sedimentary rocks form when there is alot of pressure.
<span>In the European history, the Early Middle ages lasted from 5th to the 10th century. The Early Middle Ages was the period where population was declining, majority of which was from the urban centers. The trades were also decreasing, increasing the immigration. From this statement, D, B, A can be cancelled out.
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<span>Based on the information above, India's government is a</span> "federal republic". Federal republic occurs when there is a centralized power, but also "provinces" that are in many ways autonomous.