What nation did the Soviet Union invade in 1979,bringing an end to détente?

A) Iran
B) Finland
C) Afghanistan
D) Turkey
E) Poland

Détente

The easing of strained relations, especially in a political context, between nations.

Soviet Union

A socialist state on the Eurasian continent that existed from 1922 to 1991, formally known as the Union of Soviet Socialist Republics (USSR), and was a world superpower alongside the United States.

Afghanistan

Afghanistan is a landlocked country located at the crossroads of Central and South Asia, known for its historic significance and contemporary geopolitical importance.