<prompt> Translate the following text to EnglishUreno pia ilisafiri kwa meli kwenye pwani ya magharibi ya Afrika, ikivuka Cape Bojador mwaka wa 1434, jambo ambalo hapo awali lilionwa kuwa lisilowezekana.  <response>: The Portuguese also sailed down the west coast of Africa, going beyond Cape Bojador in 1434, a feat theretofore considered to be impossible. 