From a global perspective, many peninsulas have been dug up and built into canals. The most typical Panama Canal and Suez Canal have become the busiest canals in the world, making the country develop rapidly. And some countries even dig canals to separate their neighbors directly.
France is one of the European Troika, facing Britain across the sea, with an area of more than 600,000 square kilometers and a population of 67 million. Can be said to be one of the most powerful countries in Europe. But few people know that in France, they dug a 360-kilometer canal and directly cut the Iberian Peninsula. France will build a canal to connect the west coast of France with the Mediterranean Sea, which will greatly shorten the distance between France and the Mediterranean Sea. So Louis XIV spent a lot of money and material resources to build this canal. On the one hand, he can bypass the Strait of Gibraltar and go directly to the Midi Canal without being suppressed by Spain and Portugal. By building this canal, France, which was relatively weak at that time, directly separated the Iberian Peninsula and added a protective layer.
But now the canal has a history of hundreds of years, and its international significance is not great. France does not allow other ships to go here, but still takes the Strait of Gibraltar, which has now become a world cultural heritage. The excavation of this canal made France no longer afraid of Portugal and Spain, which saved the time and cost of transporting goods to the Mediterranean. On the other hand, it also accelerated the development of France and made France occupy a place in the early world!