One of the immeasurable advantages that followed the capture of Burgoyne was our alliance with France. That country sympathized with us from the first, though her traditional hatred of England had much to do with the sentiment, but hitherto her assistance had been secret. She wished a good pretext for coming out openly, and this was furnished by the capture of Burgoyne. Franklin was in France as our representative, and his quaint wit and homely wisdom made him very popular at the gay court. He urged the claims of the United States so forcibly that the king yielded, and concluded a treaty, February 6, 1778, by which the independence of the United States was acknowledged and relations of reciprocal friendship formed with our country. This was the first treaty made by the United States with a foreign country. France agreed to send a fleet of sixteen war-vessels, under D'Estaing, and an army of 4,000 men to our assistance. Great Britain at once declared war against France, and offered to give the United States freedom from taxation and representation in Parliament if they would join in the hostilities against her old enemy. The Americans were incapable of so perfidious a course, and were now fully determined on securing their independence. Spain joined France, in 1779, in the war against Great Britain (because of the relations of the ruling families), and Holland for commercial reasons united with them in 1780. Thus Great Britain soon found her hands full. Congress decided, while Washington was at Valley Forge, that the army should consist of 40,000 foot, besides artillery and horse. Washington had 12,000, while the total American force under arms was barely 15,000. At the same time the British had 30,000 troops in New York and Philadelphia, besides 3,700 in Rhode Island. EVACUATION OF PHILADELPHIA. The British army occupied Philadelphia from September, 1777, until June the following year. Admiral Howe's fleet lay in the Delaware, and General Howe, who was of a sluggish temperament, was superseded by Sir Henry Clinton, between whom and Cornwallis the relations soon became strained. With a view of concentrating the British forces, and, since the French fleet was known to have sailed for America, it was decided that the army in Philadelphia should be removed to New York. Wishing to strike France, it was determined to make a descent upon the French West Indies, for which 5,000 troops were to be detached from the army. [Illustration: AN OLD COLONIAL HOUSE OF GERMANTOWN.] BATTLE OF MONMOUTH.