King <a href="https://en.wikipedia.org/wiki/Henry_VII_of_England" id="mwKQ" rel="mw:WikiLink" title="Henry VII of England">Henry VII of England</a> issues letters patent to <a href="https://en.wikipedia.org/wiki/John_Cabot" id="mwKg" rel="mw:WikiLink" title="John Cabot">John Cabot</a> and his sons, authorising them to explore unknown lands.