I think you wanted to know whether the statement in question is true or false. Based on this assumption, i am answering the question. It is a true fact that the Danube River is navigable and thus connects many of the countries of the European continent. I hope that the answer has come to your help.
The wind from the ocean keeps it cooler in summers. This is just a guess, but I think the sun reflecting on the ocean helps keep it warmer in the winter.
