The four-day <a href="https://en.wikipedia.org/wiki/Naval_Battle_of_Hakodate" id="mwfw" rel="mw:WikiLink" title="Naval Battle of Hakodate">Naval Battle of Hakodate</a> begins. The newly formed <a href="https://en.wikipedia.org/wiki/Imperial_Japanese_Navy" id="mwgA" rel="mw:WikiLink" title="Imperial Japanese Navy">Imperial Japanese Navy</a> defeats the remnants of the <a href="https://en.wikipedia.org/wiki/Tokugawa_shogunate" id="mwgQ" rel="mw:WikiLink" title="Tokugawa shogunate">Tokugawa shogunate</a> navy in the <a href="https://en.wikipedia.org/wiki/Sea_of_Japan" id="mwgg" rel="mw:WikiLink" title="Sea of Japan">Sea of Japan</a> off the city of <a href="https://en.wikipedia.org/wiki/Hakodate" id="mwgw" rel="mw:WikiLink" title="Hakodate">Hakodate</a>, leading to the surrender of the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/Ezo_Republic" id="mwhA" rel="mw:WikiLink" title="Ezo Republic">Ezo Republic</a> on May 17.<sup about="#mwt89" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-14"}}' id="cite_ref-14" rel="dc:references" typeof="mw:Extension/ref"><a href="./May_4#cite_note-14" id="mwhQ" style="counter-reset: mw-Ref 14;"><span class="mw-reflink-text" id="mwhg">[14]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-14"><cite about="#mwt86" class="citation book cs1" id="CITEREFTucker2017">Tucker, Spencer C. (2017). <a class="external text" href="https://books.google.com/books?id=zBjHEAAAQBAJ&amp;newbks=1&amp;newbks_redir=0&amp;printsec=frontcover#v=onepage&amp;q&amp;f=false" id="mwBh0" rel="mw:ExtLink nofollow"><i id="mwBh4">The Roots and Consequences of Civil Wars and Revolutions: Conflicts That Changed World History</i></a>. Santa Barbara, Calif.: ABC=CLIO. pp.<span id="mwBh8" typeof="mw:Entity"> </span>269–270. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwBiA" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwBiE" typeof="mw:Entity"> </span><a href="./Special:BookSources/9781440842931" id="mwBiI" rel="mw:WikiLink" title="Special:BookSources/9781440842931"><bdi id="mwBiM">9781440842931</bdi></a>.</cite><span about="#mwt86" class="Z3988" id="mwBiQ" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=The+Roots+and+Consequences+of+Civil+Wars+and+Revolutions%3A+Conflicts+That+Changed+World+History&amp;rft.place=Santa+Barbara%2C+Calif.&amp;rft.pages=269-270&amp;rft.pub=ABC%3DCLIO&amp;rft.date=2017&amp;rft.isbn=9781440842931&amp;rft.aulast=Tucker&amp;rft.aufirst=Spencer+C.&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DzBjHEAAAQBAJ%26newbks%3D1%26newbks_redir%3D0%26printsec%3Dfrontcover%23v%3Donepage%26q%26f%3Dfalse&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AMay+4"></span></span>