Final answer:
Basel is the city at the intersection of Swiss, French, and German borders with a prominent chemical and pharmaceutical industry. It's an important industrial center in Switzerland, benefiting from its location and transportation via the Rhine River.
Step-by-step explanation:
The city located at the convergence of the Swiss, French, and German borders known for its significant chemical and pharmaceutical industry is Basel. Basel serves as a major industrial center in Switzerland and has historical ties to the development of modern chemistry.
The region's strategic location and its well-established transportation network along with the Rhine River facilitate the movement of goods and resources that bolster the area's strong economic presence, particularly in high-tech industries such as pharmaceuticals.
With a population of over eight million people and being divided into 26 cantons, Switzerland is a country of great linguistic diversity speaking German, French, Italian, and Romansh with each language being predominantly spoken in different cantons. Cities like Bern, Geneva, Zurich, and Basel are significant urban centers in Switzerland.