Byzantine EmpireThe Byzantine Empire, also referred to as the Eastern Roman Empire, was the continuation of the Roman Empire primarily in its eastern provinces during Late Antiquity and the Middle Ages, when its capital city was Constantinople. It survived the fall of the Western Roman Empire in the 5th century AD and continued to exist until the fall of Constantinople to the Ottoman Empire in 1453. During most of its existence, the empire remained the most powerful economic, cultural, and military force in the Mediterranean world.
KilkisKilkis (Κιλκίς) is a city in Central Macedonia, Greece. As of 2011 there were 22,914 people living in the city proper, 28,745 people living in the municipal unit, and 51,926 in the municipality of Kilkis. It is also the capital city of the regional unit of Kilkis. The area of Kilkis, during the 20th century, became several times a war theatre; during the Macedonian Struggle, the Balkan Wars, WWI, WWII, the Greek Resistance and the Greek civil war. Kilkis is located in a region that was multi-ethnic in the recent past and is known by several different names.
IstanbulIstanbul (ˌɪstænˈbʊl , USalsoˈɪstænbʊl ; İstanbul isˈtanbuɫ), formerly known as Constantinople (Κωνσταντινούπολις; Constantinopolis; Ottoman Turkish: قسطنطينيه), is the largest city in Turkey, serving as the country's economic, cultural and historic hub. The city straddles the Bosporus strait, lying in both Europe and Asia, and has a population of over 15 million residents, comprising 19% of the population of Turkey. Istanbul is the most populous European city and the world's 15th-largest city.