Can you travel the whole length of US on Mississippi river.why or why not?

It is not possible to travel the entire length of the United States on the Mississippi River. While the Mississippi River is one of the longest and most important rivers in North America, it does not extend from coast to coast. The Mississippi River begins in Minnesota and flows south through the middle of the United States, emptying into the Gulf of Mexico. To travel the entire length of the United States, one would need to travel from the east coast to the west coast, which would require crossing the Rocky Mountains and other mountain ranges.