How many countries did the Austro-Hungarian Empire split into?

The Austro-Hungarian Empire was a traditional European power, one of the eight largest countries in the world (Great Britain, France, Germany, the United States of America, Russia, Austria-Hungary, Italy, and Japan) in the 1910s, which eventually split into ten countries;

The countries that split from the Austro-Hungarian Empire were Austria, Hungary, Czech Republic, Slovakia, Serbia, Montenegro, Croatia, Slovenia, Macedonia , and Bosnia and Herzegovina;

Parts of Austria-Hungary were also occupied by Poland, Romania, and Italy.?

Expanded information:

Austro-Hungary, along with Great Britain, France, Germany, and Russia, was one of the world's great powers of that time, and the vastness of its territory ranked the third most important in The vastness of its land area was ranked third in Europe, second only to the Russian Empire and the Ottoman Empire, and the number of its total population was slightly inferior to that of Russia and the German Empire, which was located in the third place in Europe;

The prosperity of the machinery and instrument manufacturing industry and the strength of the iron and steel armament industry ranked the fourth in the world, second only to that of Germany, the United Kingdom, and the United States.

References:

Baidu Encyclopedia Austria-Hungary