The 오스트리아 제국 was a significant European power from 1804 to 1867, emerging from the 신성 로마 제국. It was a multi-ethnic empire that included various nationalities, such as 헝가리, 체코, and 슬로바키아, and was ruled by the 합스부르크 dynasty. In 1867, the empire transformed into the 오스트리아-헝가리 제국, establishing a dual monarchy. This change aimed to address the diverse needs of its various ethnic groups while maintaining central authority. The empire played a crucial role in European politics until its dissolution after World War I in 1918.