revolutions
...that although scholars have studied revolutions for over a century, there are still many competing theories explaining those key events in human history?
...that although <a href="./Scholar" id="mwAfw" rel="mw:WikiLink" title="Scholar">scholars</a> have studied <b id="mwAf0"><a href="./Revolution" id="mwAf4" rel="mw:WikiLink" title="Revolution">revolutions</a></b> <i id="mwAf8">(depiction)</i> for over a century, there are still many competing <a class="mw-redirect" href="./Theories" id="mwAgA" rel="mw:WikiLink" title="Theories">theories</a> explaining those key events in <a href="./Human_history" id="mwAgE" rel="mw:WikiLink" title="Human history">human history</a>?