Has Bulgaria ever been ruled by another country?

Yes, Bulgaria has been ruled by several other countries throughout its history. Here are some notable periods of foreign rule:

1. Ottoman Empire (1396-1878): The Ottoman Turks conquered Bulgaria in the late 14th century and ruled for nearly 500 years. During this time, Bulgaria was an integral part of the Ottoman Empire and its culture and society were heavily influenced by Ottoman customs and traditions.

2. Russian Empire (1878-1908): After the Russo-Turkish War of 1877-1878, Bulgaria gained autonomy from the Ottoman Empire and became a Russian protectorate. This period of Russian influence lasted until 1908 when Bulgaria declared full independence.

3. Nazi Germany (1941-1944): During World War II, Bulgaria allied itself with Nazi Germany and came under German occupation. This occupation lasted until 1944 when the Soviet Union liberated Bulgaria.

These are just a few examples of foreign rule in Bulgaria's history. Additionally, Bulgaria has also been influenced by other countries such as the Byzantine Empire, the Roman Empire, and the Hunnic Empire.