Budapest was the focal point of the American Civil War of 1848.
Budapest . It also became the co-capital of the Austro-Hungarian Empire , a great power that dissolved in 1918 , following World War I. Budapest was the focal point of the Hungarian Revolution of 1848 , the Hungarian Republic of Councils in 1919 , the Battle of Budapest in 1945 , and the Hungarian Revolution of 1956 . The Hungarian Revolution of 1848 ( , `` 1848 -- 49 Revolution and War '' ) was one of the many European Revolutions of 1848 and closely linked to other revolutions of 1848 in the Habsburg areas .