In the century before start of world war 1 some countries contained many nationalities ruled by a single government?

The Ottoman Empire was a multinational state that existed in the Middle East and North Africa between 1299 and 1922. It was ruled by the Ottoman dynasty. The empire contained a variety of ethnic groups, including Turks, Arabs, Kurds, Armenians, Greeks, Albanians, Bulgarians, Serbs, Bosniaks, and Egyptians.

The Russian Empire was a multinational state that existed in Eastern Europe and Asia between 1721 and 1917. It was ruled by the Romanov dynasty. The empire contained a variety of ethnic groups, including Russians, Ukrainians, Belarusians, Finns, Estonians, Latvians, Lithuanians, Poles, Georgians, Armenians, Azeris, Tatars, Bashkirs, Kazakhs, Kyrgyz, Uzbeks, Tajiks, and Turkmens.