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.
Love
Abstract language involves concepts such as faith, hope, etc.
Simile should be the correct answer.
It depends what the explanation is about, but I’d say a diagram would be the most effective in most cases.