During WW1 and WW2, German Americans were also segregated and discriminated, but it was much worse for Japanese-Americans probably because in WW1 the Japanese were on the Allied side with America, but in WW2, the Japanese switched sides to the Central Power with Germany.
Answer: i dont even know tbh
Just use google lol thats easy
The last one is the Berlin Wall.
Warsaw Pact was agreed on 14th May 1955. The Korean War ended in 1953, the division of Germany happened in 1945
and the Berlin Wall was built in the night from 12 to 13th August 1961.