<span>The terrible meltdown at Chernobyl, in "Russia", spread radiation across Europe, since this was one of the worst nuclear disasters in world history, along with those in the United States and Japan. </span>
Answer:
Increase in population and desire to search for land
Option A I THINK..........
Well, the Sun doesn't orbit the planets; the planets orbit the sun. However, the Sun does not orbit the CENTER of the Milky Way, persay, as there are spots within the Milky way that are more dense than others. Hovever, I would assume that the answer that it's looking for is A, despite the aforementioned reasoning as to how that could be incorrect.