It happened because the consuls only cared about their own personal wealth and not for the people. The senate got richer and richer while the people got poorer and poorer. It ended with the rise of the Empire and the rule of an Emperor. The disadvantage was that all of the power was in the hand of a single person and often the Roman emperors were tyrannical.
Stones, sharp rocks, wood, & animal bones.
<em>Oligarchy, autocracy, republic.</em>
<em>I don't have a problem with anyone's choice or beliefs in government affairs, but I think these are the weakest. I think. </em>
<em>I hope this helps and have a nice day.</em>
<em>-R3TR0 Z3R0</em>