The dissolution of the Union of the Soviet Socialist Republics (USSR) "reduced the number of Communist nations in the world" and "<span>changed boundaries in Europe," since the USSR had overseen a number of "satellite states". </span><span />
B.Gerald Ford because that is the best answer to choose
The answer is 1901 AD - 2000 AD
The successful attempt to put the satellite Sputnik into space confirmed the fear of the US citizens that the Soviet Union was capable of potentially placing weapons into space (like missile-technology satellites, etc).
At the height of the Great Depression, it was said that about 25% of the labor force was out of work.