By far the most effective cause of the Revolution was the English commercial system. One reason why a tax was felt to be so great a hardship was, that the colonies were already paying a heavy indirect tribute to the British nation, by the limitations on their trade. The fact that French and Spanish colonists suffered more than they did, was no argument to Englishmen accustomed in most ways to regulate themselves. The commercial system might have been enforced; perhaps a tax might have been laid: the two together made a grievance which the colonies would not endure. [Sidenote: Stand for the charters.] The coercive acts of 1774 gave a definite object for the general indignation. In altering the government of Massachusetts they destroyed the security of all the colonies. The Crown was held unable to withdraw a privilege once granted; Parliament might, however, undo to-morrow what it had done to-day. The instinct of the Americans was for a rigid constitution, unalterable by the ordinary forms of law. They were right in calling the coercive acts unconstitutional. They were contrary to the charters, they were contrary to precedent, and in the minds of the colonists the charters and precedent, taken together, formed an irrepealable body of law. [Sidenote: Oppression not grievous.] [Sidenote: Restraints on trade.] [Sidenote: Resistance to one-man power.] In looking back over this crisis, it is difficult to see that the colonists had suffered grievous oppression. The taxes had not taken four hundred thousand pounds out of their pockets in ten years. The armies had cost them nothing, and except in Boston had not interfered with the governments. The Acts of Trade were still systematically evaded, and the battle of Lexington came just in time to relieve John Hancock from the necessity of appearing before the court to answer to a charge of smuggling. The real justification of the Revolution is not to be found in the catalogue of grievances drawn up by the colonies. The Revolution was right because it represented two great principles of human progress. In the first place, as the Americans grew in importance, in numbers, and in wealth, they felt more and more indignant that their trade should be hampered for the benefit of men over seas. They represented the principle of the right of an individual to the products of his own industry; and their success has opened to profitable trade a thousand ports the world over. In the second place the Revolution was a resistance to arbitrary power. That arbitrary power was exercised by the Parliament of Great Britain; but, at that moment, by a combination which threatened the existence of popular government in England, the king was the ruling spirit over Parliament. The colonists represented the same general principles as the minority in England. As Sir Edward Thornton said, when minister of Great Britain to the United States, in 1879: "Englishmen now understand