music: First song on Pink Floyd's The Division Bell?

Questions

what is the transference of initial consonants of spoken words called?

what was purchased in the russo-american treaty of 1867?

which organization was formed on september 4 1940 to oppose us entry into world war two?

on december 16, 1773, american townsmen dumped 90,000 pounds of tea into boston harbor in what became known as the ________?

what was the failed us sponsored invasion by cuban exiles to overthrow the castro regime in 1961 called?