<prompt> Translate the following text to SwahiliThe communes were strong enough to confine German Emperor Frederick Barbarossas Italian ambitions to the south, where he secured Sicily for his Hohenstaufen heirs by marrying his son into the Norman royal family.  <response>: Katika karne ya 19 na 20, mfalme wa Ujerumani Frederick Barbarossa alishinda vita vya Sicily na kuanzisha familia ya kifalme ya Norman. 