The geographic term for a narrow strip of land connecting two larger landmasses is called an isthmus. An isthmus can serve as a vital link between continents or major land areas, and it often plays a significant role in trade and transportation. One of the most notable examples is the Isthmus of Panama, which connects North America and South America. Isthmuses can have considerable strategic, economic, and ecological significance, often serving as crucial points for the movement of people, goods, and wildlife.