Answer:
The reason for this is because the Monte Alban pyramid complex was completely abandoned by the year 1000 AD due to socio-economic problems. In fact, wealth disparity and the over exploitation of natural resources were the two primary causes of the decline of all of the ancient civilization.
<em>De acuerdo con el general (r) Juan Salcedo Lora, los antecedentes del Estatuto de Seguridad están asociados a varios hechos violentos motivados, presuntamente, por los movimientos guerrilleros que desembocaron en el paro cívico del 14 de septiembre de 1977, convocado por las centrales obreras que se agruparon en el ...</em>
<em />
<h2>
<em>Que tengas un bonito dia </em></h2>
Google it or mayb eread it
All three of the answers are correct.
Good luck, everyone! :)