Final answer:
The Rhone River begins in Switzerland, crosses through Lake Geneva, and exits into the Gulf of Lion, playing a vital role in both Swiss and French economies.
Step-by-step explanation:
The Rhone River is a significant waterway that originates in Switzerland, flows through the eastern end of Lake Geneva, and ultimately meets the Mediterranean Sea by exiting through the Gulf of Lion.
The Rhone thus serves not only as a geographical highlight within Switzerland but also plays an important role in France. As it progresses through France, it acts as a conduit for goods and contributes to the economic vibrancy of the region, linking cities like Lyon to the wider European economic network.