Answer:
Constantinople was the center of Byzantine trade and culture.
Sorry I don’t know that language but check the ty channel for the answer
"b. When will the winter end?" is the only sentence that is correctly punctuated since it is the only question, and only questions should have question marks.
...his life and his real political goals.
This might refer to World War I, where to two groups were in conflict with each other. The Triple composed of Britain, France and Russia and the Triple Alliance composed of Germany, Turkey, Austria and Bulgaria. Many lives were lost and there was damaged to property.