Answer:
There are many things that ended before 1990. Here are some notable examples:
World War II - The war ended in 1945 with the surrender of Germany and Japan.
Cold War - The political tension between the United States and the Soviet Union ended in 1991 with the collapse of the Soviet Union.
Apartheid - The system of racial segregation and discrimination in South Africa ended in 1990 with the release of Nelson Mandela from prison and the subsequent dismantling of the apartheid system.
Berlin Wall - The physical barrier that divided Berlin, Germany, was torn down in 1989, symbolizing the end of the Cold War.
Space Race - The competition between the United States and the Soviet Union to explore space ended in 1975 with the joint Apollo-Soyuz mission.
Vietnam War - The war ended in 1975 with the fall of Saigon and the unification of North and South Vietnam.
Soviet-Afghan War - The war ended in 1989 with the withdrawal of Soviet troops from Afghanistan.
These are just a few examples, and there are many other significant events that ended before 1990.
Step-by-step explanation: