Why were the first three world cup matches called Prudential Cup?

Why were the first three world cup matches called Prudential Cup?

The inaugural Cricket World Cup was hosted in 1975 by England. The first three tournaments wee held in England and officially known as the Prudential Cup after the sponsors, the Prudential Insurance Company. Eight teams participated in the first tournament – Australia, England, the West Indies, Pakistan, India and New Zealand (the six Test nations at the time), together with Sri Lanka and a composite team from East Africa. West Indies defeated Australia by 17 runs in the final at Lord’s. In the first World Cup, the matches consisted of 60 six-ball overs per team playing during the daytime in traditional form, with the players wearing cricket whites, using red cricket balls.