British authorities in Tamil Nadu took measures to prevent uprisings, such as:

Disarming native regiments
Increased surveillance
Censorship of the press
All of the above

The correct answer is: d) All of the above.

British authorities in Tamil Nadu took measures to prevent uprisings, such as:

  • Disarming native regiments: The British disarmed native regiments in order to prevent them from being used in uprisings.
  • Increased surveillance: The British increased surveillance of the population in order to detect any signs of unrest.
  • Censorship of the press: The British censored the press in order to prevent the spread of information that could incite uprisings.

These measures were effective in preventing uprisings in Tamil Nadu. However, they also had a negative impact on the population, as they created a climate of fear and distrust.