<a href="https://en.wikipedia.org/wiki/Bolivia" id="mwcw" rel="mw:WikiLink" title="Bolivia">Bolivia</a> declares war on <a href="https://en.wikipedia.org/wiki/Chile" id="mwdA" rel="mw:WikiLink" title="Chile">Chile</a>, and Chile declares war on <a href="https://en.wikipedia.org/wiki/Peru" id="mwdQ" rel="mw:WikiLink" title="Peru">Peru</a>, starting the <a href="https://en.wikipedia.org/wiki/War_of_the_Pacific" id="mwdg" rel="mw:WikiLink" title="War of the Pacific">War of the Pacific</a>.<sup about="#mwt74" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-12"}}' id="cite_ref-12" rel="dc:references" typeof="mw:Extension/ref"><a href="./April_5#cite_note-12" id="mwdw" style="counter-reset: mw-Ref 12;"><span class="mw-reflink-text" id="mweA">[12]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-12"><cite about="#mwt71" class="citation book cs1" id="CITEREFEggenberger1985">Eggenberger, David (1985). <a class="external text" href="https://books.google.com/books?id=C5pkSZBIXW0C" id="mwDW0" rel="mw:ExtLink nofollow"><i id="mwDW4">Encyclopedia of Battles: Accounts of Over 1,560 Battles From 1479 B.C. to the Present</i></a>. New York: Dover Books. p.<span id="mwDW8" typeof="mw:Entity"> </span>426. <a class="mw-redirect" href="./ISBN_(identifier)" id="mwDXA" rel="mw:WikiLink" title="ISBN (identifier)">ISBN</a><span id="mwDXE" typeof="mw:Entity"> </span><a href="./Special:BookSources/9780486249131" id="mwDXI" rel="mw:WikiLink" title="Special:BookSources/9780486249131"><bdi id="mwDXM">9780486249131</bdi></a>.</cite><span about="#mwt71" class="Z3988" id="mwDXQ" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=Encyclopedia+of+Battles%3A+Accounts+of+Over+1%2C560+Battles+From+1479+B.C.+to+the+Present&amp;rft.place=New+York&amp;rft.pages=426&amp;rft.pub=Dover+Books&amp;rft.date=1985&amp;rft.isbn=9780486249131&amp;rft.aulast=Eggenberger&amp;rft.aufirst=David&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DC5pkSZBIXW0C&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AApril+5"></span></span>