Question

the most important effect of burgoynes surrender was that the british were defeated. france joined the war on the side of the americans. benedict arnold deserted and joined the british forces.

Explanation:

Burgoyne's surrender in the American - Revolutionary War was a turning - point. It convinced France that the Americans had a real chance of winning, leading France to join the war on the American side. The British were not fully defeated at that moment, and Benedict Arnold's defection was not a direct result of Burgoyne's surrender.

Answer:

France joined the war on the side of the Americans.