The battle of horseshoe bend in 1814 was a turning point in the war of 1812 because

The alliance between the British and the Native Americans ended

Explanation:

The Battle of Horseshoe Bend, was fought on March 27, 1814, it was  a decisive battle of the Creek War of 1813-1814. The s[lace where the battle was fought is protected as Horseshoe Bend National Military Park.

On the side  were US troops from the Tennessee National Guard and a US Army infantry regiment under Andrew Jackson, along with 2,000 infantrymen, 700 cavalrymen and artillery, as well as approximately 600 Allied Cherokees and Choctaws as well as White Sticks Creekers On the opposite side were 1,000 soldiers from the Red Sticks, the traditionalist faction among the Creek Indians, who had stayed near the Tallapoos River.

The cavalry and Native American allies  south across the river to face the Red Sticks, were sent by Jackson  a while he remained with the infantry north of their camp.

On the morning, of March 27 , Jackson's artillery opened a fire that was maintained for two hours, but the firing did not result in any visible damage to Red Sticks fieldwork. The cavalry and Indians crossed the river and attacked the Red Sticks in the back. The infantry then stormed the front and opened fire on the Red Sticks inside, for 5 hours the battle went on.

Inside the camp, 550 of  number  Red Sticks were killed. while many others who tried to flee across he river  were also  killed. the remaining  200 Red Sticks soldiers were lucky  to escape and fled  to Florida.