Final answer:
The Danube River serves as a link from west to east by connecting Western Europe to Eastern Europe. It flows eastward through major European cities and is one of the longest rivers in Europe.
Step-by-step explanation:
The Danube River can be called a link from west to east because:
- It connects Western Europe to Eastern Europe, serving as a major transportation and trade route.
- It flows eastward, passing through several major European cities such as Vienna, Budapest, and Belgrade.
- It is one of the longest rivers in Europe, stretching 1,770 miles.