Misc: What colour is amethyst?

Questions

In 1972 US Army turned over Long Bihn base to South ---------- army. ?

In 1975 Portugal grants ---------- independence (Natl Day). ?

In 1980 The crew of ---------- 35 returns to Earth aboard Soyuz 37. ?

In 1982 5th Space Shuttle Mission - ---------- 5 is launched (first commercial flight). ?

In 1984 Rev Martin ---------- King Sr, dies in Atlanta at 84. ?