The correct answer is true.
It is true that the Native American leader, Tecumseh tried to unite western Native American tribes against the taking of their land from settlers.
As part of the Shawnee Native American Indian tribe, Tecumseh (1768-1813) exerted his leadership to unify some tribes in the region to oppose the settlement of white English colonists at the beginning of the 19th century. He dared to organize a confederation of Native American Indian tribes in the region of modern-day Ohio, to defend their lands.