6) Identify the adjective clause and choose whether the clause is restrictive (not needing commas) or nonrestrictive (needing commas).
The Korean War, which took place in the early fifties, took the lives of over 33,000 Americans in three years, five years after World War II ended.
after World War II ended (restrictive)
after World War II ended (nonrestrictive)
which took place in the early fifties (restrictive)
which took place in the early fifties (nonrestrictive)