are two names forever linked. These two names, the last names of Meriwether and William respectively, are that of two of the greatest explorers in the history of the United States. With the help of Indians and a group of brave men, the vast area west of the Mississippi River was the object of their exploration. Lewis was born to a Virginia planter family in 1774. His father, who had been an officer in the American Revolution, died when Lewis was five years old, and for a brief time he lived in Georgia when his mother moved there with her s ....