What did the Colonial boycotts of British goods before the Revolutionary War were effective measures.

2 answers

What the question means is what effect did the Colonial Boycotts did to British goods?
Not a lot to the goods, however, the Townsend act had taxes added to the goods, and as a result of the goods not selling, there were no taxes collected to pay the British army and administrators.

http://www.historyplace.com/unitedstates/revolution/rev-prel.htm