Why did Tecumseh form an alliance with the British after the Battle of Tippecanoe?

In 1811, when Tecumseh was in the South, a group of natives led by Tenskwatawa, attacked U.S. army forces in the Battle of Tippecanoe. ... Following the Tippecanoe defeat, Tecumseh realized even more how important it was for a British alliance.

Explanation:

i believe the correct answer is option b. most eastern european nations joined nato.

though i could be wrong, option d. the eastern european nations were granted complete independence, would be another choice.

hope this ! : )

answer; taking up arms to defend the nation;