Because most white Americans of his era were unfamiliar with Native American culture, they did not understand the Prophet's religious movement. Since his death in 1836, the Prophet has been relegated to a secondary role. Those who knew Tenskwatawa after 1825, when he no longer had his previous influence as a religious leader, described him as a "shallow opportunist." However, it was Tenskwatawa, not his brother, Tecumseh, who provided the spiritual foundation for the Indian resistance movement in the Midwest in the years immediately preceding the War of 1812. In the Indiana Territory, the violence that erupted between the U.S. and the pan-Indian alliance that Tenskwatawa and Tecumseh established at Prophetstown led to the relocation of territorial capital from Vincennes to Corydon, Indiana. In addition, U.S. efforts to remove Indian inhabitants from the Indiana Territory increased after the War of 1812 and led to their forced removal to reservations in the trans-Mississippi west.