<prompt> Translate the following text to EnglishKatika mwaka wa 1580, wakati Filipo wa Pili wa Hispania alipojitangaza kuwa mfalme wa Ureno, jeshi lake lilivuka mpaka wa Ureno.  <response>: On 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. 