Affects of corrupted government!

I believe a leader plays a huge role in the society because he decides what's right and wrong for the country but sometimes, leaders choose what to do in the country based on how much benefit they receive in it . Some governments take taxes, bribes etc from the people living in his part of land even though they are extremely poor. These people are corrupted leaders and will not do anything for the benefit of the country. There were such many kings and governors in the medieval times which added to the dark times of the middle ages. Most of the kings used to fight several wars with other kings just to add on to their wealth but never looked back and saw the terrible and damages and deaths that they had caused..!