The answer is the Ottoman Empire.
The Ottoman Empire conquered the Byzantine Empire and its capital, Constantinople, in 1453 CE. Since then, the Ottoman Empire remained as a strong power and its sovereignty spanned from the Balkans and Anatolia to the Middle East and all of North-Africa. Since it was an Islamic empire, it influenced strongly in the culture and politics of the Middle East. This empire collapsed with the end of the World War I in 1919, and most of its former territories were divided by the British and the French or formed new nation-states. The Republic of Turkey is the direct heir state of the Ottoman Empire.
Explanation:
D. People should treat others the way they would like other to treat them.
Answer: It indicates that wagon consisting the letter X is the last wagon of the train. It easily alerts the railway officials so that they can save from the accident.
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