Which of the following was once a part of russia before it was sold to the united states?

Alaska

Explanation:

On March 30, 1867, the United States purchased Alaska from the Russian Empire for 7.2 million U.S. dollars, or approximately two cents per acre ($4.74/km^2). The area went through several administrative changes before becoming organized as a territory on May 11, 1912.

true. earthquakes are felt whenever there is a slip around a fault in the rocks below the earth. this reorientation of faults create sesmic waves and is known as earthquake, the severity of which is measured in richter scale. these are more prominent in hilly regions as the rocks usually form faults to balance the pressures on it.

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