The Soviet Union had its roots in the 1917 October Revolution, when the Bolsheviks, led by Vladimir Lenin, overthrew the Russian Provisional Government which had replaced the autocratic regime of Tsar Nicholas II during World War I.
Hope this helped
The correct answer to the top one is B
What I believe you are referring to is "the Blackstone" which was a largely sized meteorite.
The correct answer should be Troy
Answer
planet.because planets are heavinly bodies but asteroids are not too big