2 Tax from the land was a major source of revenue for the kings and emperors from ancient times.
Zamindari System was also known as Permanent Settlement System
Zamindar means a man of the land or Landlord In most cases, they had to share a big chunk of their taxes with the Lord above them
Zamindari is a system of collecting taxes The core of it is money
The present Zamindary system was created by the Mughals who replaced the earlier tax collections systems and appointed their own collectors.
The Zamindars didn't care who they passed the taxes to and locals didn't care as the Zamindar (their controller) stayed the same. Since the Zamindars helped maintain law and order, British Crown were able to rule without bringing a lot of Englishmen.
Ryotwari System In the south, the Mughals never ruled so the Zamindari system was not strong there Thus, the Britishers used the Ryotwari system. Ryots means farmers. In the new system, the farmers directly paid the taxes to the government through collectors
In fact, from the 18th century West Bengal inherited a completely messed up and overly complicated land allocation system which was one of the reasons for the frequent famines there.