Misc: What's the international radio code word for the letter "B"?

Questions

09 January 1960 Building of Aswan dam in---------- , begins ?

10 January 1960 Bollingen Prize for ---------- awarded to Delmore Schwartz ?

11 January 1960 Chad declares independence from ---------- ?

11 January 1960 Lamar Clark sets pro boxing record of 44 consecutive ---------- ?

14 January 1960 Tuindorp-Oostzaan in Northern---------- , flooded ?