Which physical feature is located in North America?

The Mississippi River is a significant physical feature located in North America, recognized as one of the longest rivers in the world. It flows approximately 2,340 miles from its source in Minnesota down to its mouth at the Gulf of Mexico. The river has served various important roles throughout history, including acting as a critical transportation route for goods and people, as well as supporting a diverse ecosystem along its banks.

In contrast, the tundra ecosystem, while present in parts of North America in Arctic regions, is not a singular feature like a river or a mountain range and is found in various places around the world outside of North America as well. The Tasman Sea is located between Australia and New Zealand, making it irrelevant when considering North American physical features. Lastly, the Sahara Desert is located in Africa, distinctly separate from North America. Thus, the Mississippi River is clearly identified as a prominent North American feature.