Who does grundy hold responsible for tecumseh's uprising (the "late conduct" of the indian tribes he mentions) ?

In his speech, Felix Grundy says that he perceives a foreign influence of Great Britain in the activities of Tecumseh. Mentioning the recent Battle of Tippecanoe, he refers to the possible sponsorship of the Indians, since it is difficult for him to understand that the acts of the Indians are of their own initiative. His perception of the indigenous people as savage makes him think that without British action, victory would have been impossible.