The <a href="https://en.wikipedia.org/wiki/Mesoamerican_Long_Count_calendar" id="mwEQ" rel="mw:WikiLink" title="Mesoamerican Long Count calendar">Mesoamerican Long Count calendar</a>, used by several <a href="https://en.wikipedia.org/wiki/Pre-Columbian_era" id="mwEg" rel="mw:WikiLink" title="Pre-Columbian era">pre-Columbian</a> <a href="https://en.wikipedia.org/wiki/Mesoamerica" id="mwEw" rel="mw:WikiLink" title="Mesoamerica">Mesoamerican</a> civilizations, notably the <a href="https://en.wikipedia.org/wiki/Maya_civilization" id="mwFA" rel="mw:WikiLink" title="Maya civilization">Maya</a>, begins.