Answer:
The Soviet Invasion of Afghanistan and the U.S. Response, 1978–1980. At the end of December 1979, the Soviet Union sent thousands of troops into Afghanistan and immediately assumed complete military and political control of Kabul and large portions of the country.
Explanation:
Because it encouraged later revolutions in other parts of the world. :)
Iceland is the most isolated because it is separated from the others by a larger distance across the ocean, and by deep ocean crust rather than just submerged continental shelf