[palerdot]

Your point that every person in the then India carrying a weapon would have prevented a British Invasion is downright dumb.

The whole idea of current united India came from opposing the British Rule. Before that, India was just numerous bunch of small kingdoms ruling their own tiny part of current India.

British entered India as East India Company, a trading arm of Britain, which I think is wholly independent of Britain in its ability to rule (politically and military wise) the parts of the world where it had trade operations.

You should also note that Britain had America under its control before US gained independence. If we just extend your logic, then you mean, US got independence just because all of its population were carrying a gun, and not because of strong will shown by personalities like Washington to have an independent nation.