Question

The ____ is the second longest river in Europe. It forms a border between serbia and ____ before draining into the ____ sea

Answer 1

Danube and Romania and Black

Answer 2

Danube, and romania, black sea.

Step-by-step explanation:

• Danube river is the Europe second-longest river system after the Volga and is located in the central and the eastern Europe. And was a log standing frontier the roman empire. And it passes through one European country before draining into the black sea. And has a length of 2,850 km. Considered as an international waterway.