Such as in the case of Tsarist Russia in the earliest 20th century, absolute power can lead to much cynicism towards the autocratic leader, in which he/she is seen as the centre of blame for all social, political, and economic circumstances. this can lead to uprisings, strikes and revolutions where the masses rise up against their sole leader
The first recorded gladiatorial combat in Rome occurred when three pairs of fights fought to the death, which is why its represented in Rome.
Slavery ended when President Abraham Lincoln delivered his iconic Emancipation Proclamation. This would eventually free black people so they could become ordinary citizens and NOT slaves. So basically, slavery was ended all thanks to good ol' Lincoln :)
