Constantine moved the capital of the Empire

In the year 330 CE, the Emperor Constantine decided to move the seat of the government from Rome to Byzantium, which was renamed Constantinople. The founding of Constantinople led to it becoming the focal point of the Silk Trade Routes and to Istanbul becoming a major city in the world.Population also was affected by this move, Byzantium (which ultimately became Constantinople) was just a village before Constantine had his "vision" to build another capital there, after the administrative workers and artisans and merchants moved there, Rome started to lose its intellectual population, leaving behind.The founder of the Byzantine Empire and its first emperor, Constantine the Great, moved the capital of the Roman Empire to the city of Byzantium in 330 CE, and renamed it Constantinople. Constantine the Great also legalized Christianity, which had previously been persecuted in the Roman Empire.Constantinople was the largest and richest urban center in the Eastern Mediterranean Sea during the late Eastern Roman Empire, mostly as a result of its strategic position commanding the trade routes between the Aegean Sea and the Black Sea. Constantinople is an ancient city in modern-day Turkey that's now known as Istanbul. ... In 330 A.D., it became the site of Roman Emperor Constantine's “New Rome,” a Christian city of immense wealth and magnificent architecture.

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the answer is c.

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abraham lincoln  (february 12, 1809  – april 15, 1865) was an american statesman, politician, and lawyer who served as the 16th  president of the united states  from 1861 until  his assassination  in april 1865. lincoln led the nation through the  american civil war, its bloodiest war and its greatest moral, constitutional, and political crisis.[2][3]  he preserved the  union,  abolished slavery, strengthened the  federal government, and modernized  the u.s. economy.