The most important effect of Burgoyne's 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.

1 answer

The most important effect of Burgoyne's surrender at the Battle of Saratoga in 1777 was that France joined the war on the side of the Americans. This pivotal event significantly changed the dynamics of the American Revolution by bringing in French military support, which helped strengthen the American cause against British forces.