When Lewis and Clark met Native Americans, they also gave a formal speech. Read part of a speech that was given by Clark to Yellowstone Native Americans: Children I take you all by the hand as the children of your Great father the President of the U. States of America who is the great chief of all the white people towards the [rising] sun.

Children Your great father the Chief of the white people intends to build a house and fill it with such things as you may want and exchange with you for your skins & furs at a very low price. & has [directed] me [to] enquire of you, at what place would be most convenient for to build this house.

Who is the “Great Father” in the speech? How does this speech show the goal of the Lewis and Clark mission?