RMS Lusitania Lusitania History: Lusitania Lusitania sunk Germany had declared unrestricted submarine warfare Lusitania? 1915 sinking of the RMS Lusitania 1915 sinking of the RMS Lusitania Lusitania MS Lusitania the Lusitania Lusitania sunk Lusitania Lusitania Lusitania Lusitania Lusitania Lusitania Lusitania sinking of the RMS Lusitania Lusitania