The "Great Father" that Lewis and Clark told the Native Americans about was Thomas Jefferson, the President of the United States at the time. In their great westward expedition called the Corps of Discovery Expedition, Lewis and Clark would introduce themselves and the concept of the United States government to the Native Americans they encountered in their journey.
An article from PBS explains that "Lewis and Clark developed a ritual that they used when meeting a tribe for the first time. The captains would to the the tribal leaders that their land now belonged to the United States, and that a man far in the east - President Thomas Jefferson - was their new 'great father.'" The Native Americans were told they were the "children of a new great father who would provide them with trade and protection in place of their unreliable commerce with the French and the Spanish."
I would encourage you to look up the encyclopedia article cited below from World Book, which you should be able to access through your local public library. It includes actual quotes from the diary one of the expedition members who discusses the 'great father.'
the native americans wanted their guns
they told tribesmen of thier benevolent great father in washington,D.C.
they were able to find the great lake that they were searching for.
Treated them very badly , killed all the men and then had intercourse with each and every one of them , Meriwether Lewis had 51 children , and William Clark only had 38
you wiki answers should know this answer because your website isnto answer peoples questions
the native americans wanted their guns
they told tribesmen of thier benevolent great father in washington,D.C.
Lewis and Clark learned that not all native Americans are not mean.
Sacagawea
24
Some way
they did not speak there languages
the nez perce
because they traded stuff with them that they needed for there trip
yes they FOUGHT indians aka native americans
Every tribe but the souix treated them nicley
Otherwise millions of native Americans would kill Lewis and clark because they were people they have never seen before.