After the outrage on board the Dartmouth in Boston harbour the government resolved to coerce Massachusetts, and a continental Congress met to devise means for its protection. The king's troops were sent to destroy military stores that had been collected at Concord; and at Lexington, on the outward march, as well as all the way back, they were assailed by militia. The affair at Lexington, 19th April, 1775, was the beginning of the War of Independence, which opened with the siege of Boston. Two months later the first action was fought at Bried's Hill, or Bunker Hill, which are low heights overlooking the town, and the colonials were repulsed with very little loss. The war that followed, and lasted six years, is not illustrious in military annals, and interests us chiefly by the result. After the first battle the colonies declared themselves independent. Virginia, acting for herself only, led the way. Then the great revolutionist, who was the Virginian leader, Jefferson, drew up the Declaration of Independence, which was adopted by the remaining states. It was too rhetorical to be scientific; but it recited the series of ideas which the controversy had carried to the front. Thirty thousand German soldiers, most of them from Hesse Cassel, were sent out, and were at first partially successful; for they were supported by the fleet, which the estuaries carried far inland. Where the European army had not that advantage things went badly. The Americans attacked Canada, expecting to be welcomed by the French inhabitants who had been so recently turned into British subjects. The attack failed dramatically by the death of General Montgomery, under the walls of Quebec, and the French colonists remained loyal. But an expedition sent from Canada against New York, under Burgoyne, miscarried. Burgoyne had scarcely reached the Hudson when he was forced to surrender at Saratoga. The Congress of the States, which feebly directed operations, wished that the terms of surrender should not be observed, and that the 5000 English and German prisoners, instead of being sent home, should be detained until they could be exchanged. Washington and his officers made known that if this was done they would resign. The British defeat at Saratoga is the event which determined the issue of the conflict. It put an end to the vacillation of France. The French government had to recover the position it had lost in the last war, and watched the course of events for evidence that American resistance was not about to collapse. At the end of 1777 the victory of Saratoga supplied the requisite proof. Volunteers had been allowed to go over, and much war material was furnished through the agency of a comic poet. Now a treaty of alliance was concluded, a small army was sent to sea, and in March 1778 England was informed that France was at war with her. France was followed by Spain, afterwards by Holland.