Answer: Under the Permanent Settlement, the rates of revenue were fixed permanently, i.e. it was not to be increased ever in future. But in the mahalwari system it was decided that the rate of revenue would be revised periodically, not permanently fixed.
Under the Permanent Settlement, the zamindars were given the charge of collecting revenue from the peasants and paying it to the Company. But in the mahalwari system this charge was given to the village headman.
Explanation:
It depends on what you take to be the beginning and what the end. It lasted two years if you understand it as from the time it was revealed to the time Nixon resigned. It lasted 5 years if you take it from the time Nixon began doing it to the time he resigned.
Because the Ku Klux Klan is an organization that doesn't tolerate black people and kills them for a living. And because of that it would be called the first homegrown terrorist organization.