I believe that finding the balance of drones would be putting a limit on how many drones a country can use at one time. I'm not sure on the other 2 questions.
<span>The protested by not buying or not using British goods by boycotting them. In 1773, some colonist that were still not happy with the taxes decided to put on the attires of traditional indians and sneakily got into ships in the harbours and dumped tea imported from Britain in the water.This became know as the Boston tea party, this action resulted in the closure of the Boston port. A similar event happened in York the following year</span>
Due to non-violent methods of the Father of Our Nation Mahatma Ghnadi which led to the British withdrawing from India in August 15 1947
A. Not giving up her seat to a white male passenger
The answer is: Boxer Rebellion