On This Day: 28 December 1974 More than 5,200 people killed in ---------- earthquake ?

Questions

In 1921 Amilcar---------- , worked for independence of Portuguese Africa, born. ?

In 1921 Amilcar Cabral, worked for independence of---------- , born. ?

In 1921 ---------- Lem, Polish science-fiction writer, born. ?

In 1921 Stanislaw---------- , Polish science-fiction writer, born. ?

In 1928 ---------- Hepburn makes her New York stage debut in "Night Hostess." ?