<a href="https://en.wikipedia.org/wiki/Hugo_Ballivián" id="mw4Q" rel="mw:WikiLink" title="Hugo Ballivián">Hugo Ballivián</a>'s government is overthrown by the <a class="mw-redirect" href="https://en.wikipedia.org/wiki/History_of_Bolivia_(1920–64)" id="mw4g" rel="mw:WikiLink" title="History of Bolivia (1920–64)">Bolivian National Revolution</a>, starting a period of <a href="https://en.wikipedia.org/wiki/Agrarian_reform" id="mw4w" rel="mw:WikiLink" title="Agrarian reform">agrarian reform</a>, <a href="https://en.wikipedia.org/wiki/Universal_suffrage" id="mw5A" rel="mw:WikiLink" title="Universal suffrage">universal suffrage</a> and the <a href="https://en.wikipedia.org/wiki/Nationalization" id="mw5Q" rel="mw:WikiLink" title="Nationalization">nationalization</a> of tin mines