Answer:
An active volcano is a volcano that has had at least one eruption during the past 10,000 years. An active volcano might be erupting or dormant. An erupting volcano is an active volcano that is having an eruption.
A Dormant volcanoes have not erupted for a very long time but may erupt at a future time. Extinct volcanoes are not expected to erupt in the future. Inside an active volcano is a chamber in which molten rock, called magma, collects.
The effects are altered political alliances, changed European borders, reduced the number of communist nations
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<u>Explanation</u>:
- Altered political alliances; big portion of the countries that emerged as a product of the fall of the USSR immediately were oriented towards the west, mainly the EU and NATO, and since both of this organizations were eager to spread their influence and weaken Russia as much as possible, they gladly took this countries under their wing.
- changed European borders:
Multiple countries were formed, due to the fall of the USSR so a big change was witnessed in the border changes in Eastern Europe.
- Reduced the number of communist nations:
After the fall of the USSR, the countries that were once members of it changed their systems completely and turned towards market economies and democracy.
