useless trivia: What Word Means: The Sago Palm?

Questions

In 1972 Kwame ---------- president of Ghana, dies at 62.?

In 1978 ---------- revolution (National Day).?

In 1981 Beatle ---------- marries actress Barbara Bach.?

In 1987 US Justice Dept bars Austrian Chancellor Kurt ---------- from entering US, due to his aid of Nazi Germany during WW II. ?

In 1989 ---------- students take over Tiananmen Square in China.?