postal savings system
...that the United Kingdom was the first country to offer its citizens a postal savings system?
...that the <a href="./United_Kingdom" id="mwAeY" rel="mw:WikiLink" title="United Kingdom">United Kingdom</a> was the first country to offer its citizens a <b id="mwAec"><a class="mw-redirect" href="./Postal_savings_systems" id="mwAeg" rel="mw:WikiLink" title="Postal savings systems">postal savings system</a></b>?