<a href="https://en.wikipedia.org/wiki/Events_preceding_World_War_II_in_Europe" id="mw0w" rel="mw:WikiLink" title="Events preceding World War II in Europe">Events preceding World War II in Europe</a>: Prime Minister <a href="https://en.wikipedia.org/wiki/Neville_Chamberlain" id="mw1A" rel="mw:WikiLink" title="Neville Chamberlain">Neville Chamberlain</a> pledges British military support to the <a href="https://en.wikipedia.org/wiki/Second_Polish_Republic" id="mw1Q" rel="mw:WikiLink" title="Second Polish Republic">Second Polish Republic</a> in the event of an invasion by <a href="https://en.wikipedia.org/wiki/Nazi_Germany" id="mw1g" rel="mw:WikiLink" title="Nazi Germany">Nazi Germany</a>.<sup about="#mwt78" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-13"}}' id="cite_ref-13" rel="dc:references" typeof="mw:Extension/ref"><a href="./March_31#cite_note-13" id="mw1w" style="counter-reset: mw-Ref 13;"><span class="mw-reflink-text" id="mw2A">[13]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-13"><cite about="#mwt75" class="citation web cs1" id="mwCPw"><a class="external text" href="https://history.blog.gov.uk/2019/03/28/whats-the-context-31-march-1939-the-british-guarantee-to-poland/" id="mwCP0" rel="mw:ExtLink nofollow">"What's the context? 31 March 1939: the British guarantee to Poland - History of government"</a>. <i id="mwCP4">history.blog.gov.uk</i>. 28 March 2019<span class="reference-accessdate" id="mwCP8">. Retrieved <span class="nowrap" id="mwCQA">2 April</span> 2022</span>.</cite><span about="#mwt75" class="Z3988" id="mwCQE" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&amp;rft.genre=unknown&amp;rft.jtitle=history.blog.gov.uk&amp;rft.atitle=What%27s+the+context%3F+31+March+1939%3A+the+British+guarantee+to+Poland+-+History+of+government&amp;rft.date=2019-03-28&amp;rft_id=https%3A%2F%2Fhistory.blog.gov.uk%2F2019%2F03%2F28%2Fwhats-the-context-31-march-1939-the-british-guarantee-to-poland%2F&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AMarch+31"></span></span>