The <a href="https://en.wikipedia.org/wiki/1797_Riobamba_earthquake" id="mwWw" rel="mw:WikiLink" title="1797 Riobamba earthquake">Riobamba earthquake</a> strikes <a href="https://en.wikipedia.org/wiki/Ecuador" id="mwXA" rel="mw:WikiLink" title="Ecuador">Ecuador</a>, causing up to 40,000 casualties.<sup about="#mwt58" class="mw-ref reference" data-mw='{"name":"ref","attrs":{},"body":{"id":"mw-reference-text-cite_note-9"}}' id="cite_ref-9" rel="dc:references" typeof="mw:Extension/ref"><a href="./February_4#cite_note-9" id="mwXQ" style="counter-reset: mw-Ref 9;"><span class="mw-reflink-text" id="mwXg">[9]</span></a></sup>
<span class="mw-reference-text" id="mw-reference-text-cite_note-9"><cite about="#mwt55" class="citation book cs1" id="mwBhw"><a class="external text" href="https://books.google.com/books?id=avgyAQAAMAAJ&amp;pg=PA293" id="mwBh0" rel="mw:ExtLink nofollow"><i id="mwBh4">The Edinburgh New Philosophical Journal: Exhibiting a View of the Progressive Discoveries and Improvements in the Sciences and the Arts</i></a>. 1837. p.<span id="mwBh8" typeof="mw:Entity"> </span>293.</cite><span about="#mwt55" class="Z3988" id="mwBiA" title="ctx_ver=Z39.88-2004&amp;rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Abook&amp;rft.genre=book&amp;rft.btitle=The+Edinburgh+New+Philosophical+Journal%3A+Exhibiting+a+View+of+the+Progressive+Discoveries+and+Improvements+in+the+Sciences+and+the+Arts&amp;rft.pages=293&amp;rft.date=1837&amp;rft_id=https%3A%2F%2Fbooks.google.com%2Fbooks%3Fid%3DavgyAQAAMAAJ%26pg%3DPA293&amp;rfr_id=info%3Asid%2Fen.wikipedia.org%3AFebruary+4"></span></span>