Expanding America crossing the Rockies

It has been an extremely rough travel over these colossal mountains. We have had much help from the native people. They have generations of experience navigating the great mountains. it would be nearly impossible to cross these mountains with out their help. We have been travelling with a young native american woman named Sacagawea. She knows the land very well. It was a very long and treacherous trip. we delt with weather and animals it is incredible the wild life.