Final answer:
The immediate result of the Battle of Lake Erie was that Tecumseh, the leader of the native tribes, was killed. This event led to the loss of British allies and the American regain of control of the Great Lakes, marking a turning point in the war.
Step-by-step explanation:
The immediate result of the Battle of Lake Erie was that Tecumseh was killed. Tecumseh was the leader who had brought the Indian tribes together, and without his strong leadership, his confederation did not last. Most Indians returned home, resulting in the loss of British allies and the American regain of control of the Great Lakes. This event marked a turning point in the war and opened up the Indiana and Michigan territories for White settlement.