Селевкидска, or the Seleucid Empire, was a Hellenistic state that emerged after the death of Alexander the Great in 323 BCE. It was founded by Seleucus I Nicator, one of Alexander's generals, and spanned a vast territory that included parts of modern-day Turkey, Syria, Iraq, and Iran. The empire played a significant role in the cultural and political landscape of the ancient world, blending Greek and Eastern influences. The Seleucid Empire was known for its cities, such as Antioch, which became important cultural and economic centers. The empire faced numerous challenges, including internal strife and external threats from rival kingdoms. Despite its eventual decline, the Seleucid Empire contributed to the spread of Hellenistic culture and the development of trade routes across the region.