Question

why does the western Europe has one of the densest road and rail network in the world? ​

Answer 1

Answer:

Transport in Europe provides for the movement needs of over 700 million people[1] and associated freight. The political geography of Europe divides the continent into over 50 sovereign states and territories. This fragmentation, along with increased movement of people since the Industrial Revolution, has led to a high level of cooperation between European countries in developing and maintaining transport networks. Supranational and intergovernmental organisations such as the European Union (EU), Council of Europe and the Organization for Security and Co-operation in Europe have led to the development of international standards and agreements that allow people and freight to cross the borders of Europe, largely with unique levels of freedom and ease.

so its obvious that there will be so much traffic