"It is not here necessary to examine in detail the causes which led to the American Revolution. In their immediate occasion they were largely economic. The colonists objected to the navigation laws which interfered with their trade, they denied the power of Parliament to impose taxes which they were obliged to pay, and they therefore resisted the royal governors and the royal forces which were sent to secure obedience to these laws. But the conviction is inescapable that a new civilization had come, a new spirit had arisen on this side of the Atlantic more advanced and more developed in its regard for the rights of the individual than that which characterized the Old World. Life in a new and open country had aspirations which could not be realized in any subordinate position. A separate establishment was ultimately inevitable. It had been decreed by the very laws of human nature. Man everywhere has an unconquerable desire to be the master of his own destiny." -- President Calvin Coolidge, Address at the Celebration of the 150th Anniversary of the Declaration of Independence, 1926.