Ok. Well I don't wish to enter into one of these Balkan disputes that I frequently see on the internet, as I have no dog in that fight . On a "global" scale, the only nations from 1870-1914 worth a mention outside of Europe is the U.S. and Japan. Japan started to come into their own with their victory over Russia in 1905, so they are negligible during your opening question. The U.S. certainly was becoming a world power during this period, but I would not place them as one until after their victory over the Spanish in 1898. Even then, the U.S. exhibited little interest in European matters. Most of their interest was in the hemisphere and somewhat into the Pacific. I am no francophile, but I feel as if this thread is migrating toward "France is bad, A-H is good." I see no way that the A-H would have improved its lot in the years after WWI if that war had not occurred. During the Revolutions of 1848, Austria was forced to give all kinds of concessions to many of the ethnic groups within its empire, the most notable to the Hungarians. In the tri partitioned Poland, A-H had the loosest grip on its people. This was good for the people of Galicia, but I am not sure how good it was for the empire. Really, there was a decline, relatively speaking in Britain, France, Austro-Hungary, the Ottoman Empire and Russia during that period in the OP.
Austria-Hungary had over ten million more people than France did at the start of WWI and that gap would have continued to grow. Austria would never have surpassed the US Germany(especially given her political subordination) or maybe even the UK, but she was on a path to be more powerful and rich than the French at the time.