 Complete the following phrase:  Archduke Franz Ferdid of Austria travelled aboard Viribus Unitis in late June 1914 en route to Bosnia to observe military manoeuvres. On 25 June, he boarded the ship in Trieste Harbour and travelled to the mouth of the Neretva River, where he transferred to another vessel. On 30 June, two days after Ferdid and his wife were 