<prompt> Translate the following text to SwahiliOn the mainland, an invasion of even greater significance followed in 1580, when Philip II of Spain proclaimed himself king of Portugal and marched his armies across the border.  <response>: Katika mwaka wa 1580, wakati Filipo wa Pili wa Hispania alipojitangaza kuwa mfalme wa Ureno, jeshi lake lilivuka mpaka wa Ureno. 