<prompt> Translate the following text to EnglishHata hivyo, licha ya jitihada zao, kisiwa cha Ibiza kilikuwa kikitishiwa na meli nyingi za maadui hivi kwamba wenyeji walichukua hatua isiyo na kifani ya kuanzisha kikundi chao cha maharamia.  <response>: Despite their efforts, however, Ibiza was menaced by so many hostile flotillas that the locals took the unprecedented step of forming their own band of privateers. 