Question

What caused the US to boycott the 1980 Summer Olympics in Moscow and the Soviets to boycott the 1984 Summer Olympics in Los Angeles?

Answer 1

The 1979 Soviet invasion of Afghanistan

Step-by-step explanation:

Most of the world's media interpreted the Soviet boycott as retaliation for the US boycott of the 1980 Moscow Games, which had been in response to the 1979 Soviet invasion of Afghanistan, whereas the Soviet media repeated the government line that the boycott was a safety measure to protect their own athletes