merchant submarines
...that Germany built two merchant submarines in World War I to trade for valuable raw materials with the United States?
...that <a href="./Germany" id="mwAkI" rel="mw:WikiLink" title="Germany">Germany</a> built two <b id="mwAkM"><a href="./Merchant_submarine" id="mwAkQ" rel="mw:WikiLink" title="Merchant submarine">merchant submarines</a></b> <i id="mwAkU">(pictured)</i> in <a href="./World_War_I" id="mwAkY" rel="mw:WikiLink" title="World War I">World War I</a> to trade for valuable raw materials with the <a class="mw-redirect" href="./United_States_of_America" id="mwAkc" rel="mw:WikiLink" title="United States of America">United States</a>?