Which of the following is an example of how the Congress of Vienna and Concert of Europe were successful?(1 point) Responses They made all European rivers open for free navigation. They made all European rivers open for free navigation. Small wars broke out in Europe soon after the Congress of Vienna. Small wars broke out in Europe soon after the Congress of Vienna. Revolutionary movements continued across Europe after the Congress of Vienna and Concert of Europe. Revolutionary movements continued across Europe after the Congress of Vienna and Concert of Europe. They provided a quick fix for a broken Europe, but the stability did not last very long.