Answer: Indonesia
Explanation:
It has 147 volcanoes in which 76 are still active.
Three seismic stations are needed to determine the location of an earthquake's epicenter.
Answer:
southern Russia
Explanation:
Tamerlane's battles with the Golden Horde in the 14th century in southern Russia, weakened the Mongol hold in that region. This allowed Russian vassal states to gain power but unable to completely unify, the Russian prince remained vassals of the Mongols until 1480.
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