more ... Two Angles are Supplementary when they add up to 180 degrees. They don't have to be next to each other, just so long as the total is 180 degrees. Examples: 60Â° and 120Â° are supplementary angles. 93Â° and 87Â° are supplementary angles.
The colonies had grown vastly in economic strength and cultural attainment, and virtually all had long years of self-government behind them. In the 1760s their combined population exceeded 1,500,000 -- a sixfold increase since 1700.
The British, through both their economic resources and their powerful navy, which was just coming off its defeat of the Spanish Armada, was able to control the slave trade to its own economic advantage. This is how the British Empire grew to what it was.