"c. The city became a central hub for trade, which contributed to the empires growth" best describes the effect of Constantine moving the capital to Constantinople, since it was a thriving metropolis.
The answer is- Division of a place or country into several small political units, often unfriendly to one another. The term balkanization comes from the name of the Balkan Peninsula, which was divided into several small nations in the early twentieth century.
Answer: The Khmer Rouge is the name which was popularly given to members of the Communist Party of Kampuchea and by extension it was also given to the regime through which the CPK ruled Cambodia between 1975 and 1979. The name had been coined in the 1950s by Norodom Sihanouk as a blanket term for the Cambodian left.