useless trivia: What Word Means: To Exchange, Barter, Or Traffic?

Questions

In 1951 United Kingdom of ---------- gains independence from Italy via the UN. ?

In 1954 Laos gains its---------- . ?

In 1964 Shooting begins on "The Cage" the pilot for Star---------- . ?

In 1990 Saddam says ---------- will be Iraq's 1st target. ?

In 1991 Mikhail ---------- resigns as head of the Soviet Union. ?