What did the british have to do to win the revolutionary war? question 21 options: they only had to blockade all of the sea ports to cut off supplies they had to encourage the native americans to do most of the fighting to scare the americans and destroy many of their towns they only had to occupy the major cities of the colonies they had to fully crush the rebellion in all of the colonies and reestablish british rule

They  only had to blockade all of the sea ports to cut off supplies

Explanation:

The easiest and most efficient way the British would have won the revolutionary war was to cut off supplies to the revolutionary army since the British rule controlled the seaports, they would have blocked supply from European countries that aided the revolutionaries.

with the lack of necessary supply to the revolutionaries they would have surrendered after a while to the British rule. this is because no hungry man can sustain a war and also wars are waged with weapons and if these two vital tools are absent then the war is lost already