<span>The musical style that was the initial influence for The Police was a combination of reggae, punk, and jazz. Due to their unique sound, The Police became know as one of the first new wave groups. The band was formed in London in 1977 and enjoyed immediate success. Unfortunately, they disbanded nine years later.</span>
So basically bud they declared war because Germany had sunk the Lusitania and was therefore trying to abandon the policy against unrestricted submarine warfare
